From bc49aa5530c97ca7cc10f7da4c27e29cb6ee16c9 Mon Sep 17 00:00:00 2001
From: Alexander Taepper <alexander.taepper@gmail.com>
Date: Thu, 31 Aug 2023 10:12:23 +0200
Subject: [PATCH] feat: use 'pragma once' as include guards instead of
 'ifndef...'

---
 include/silo/common/aa_symbols.h                            | 5 +----
 include/silo/common/bidirectional_map.h                     | 5 +----
 include/silo/common/block_timer.h                           | 5 +----
 include/silo/common/data_version.h                          | 5 +----
 include/silo/common/date.h                                  | 5 +----
 include/silo/common/date_format_exception.h                 | 5 +----
 include/silo/common/fasta_format_exception.h                | 5 +----
 include/silo/common/fasta_reader.h                          | 5 +----
 include/silo/common/format_number.h                         | 5 +----
 include/silo/common/input_stream_wrapper.h                  | 5 +----
 include/silo/common/log.h                                   | 5 +----
 include/silo/common/nucleotide_symbols.h                    | 5 +----
 include/silo/common/pango_lineage.h                         | 5 +----
 include/silo/common/string.h                                | 5 +----
 include/silo/common/string_utils.h                          | 5 +----
 include/silo/common/symbol_map.h                            | 5 +----
 include/silo/common/template_utils.h                        | 5 +----
 include/silo/common/types.h                                 | 5 +----
 include/silo/common/zstd_compressor.h                       | 5 +----
 include/silo/common/zstd_decompressor.h                     | 5 +----
 include/silo/common/zstdfasta_reader.h                      | 5 +----
 include/silo/common/zstdfasta_writer.h                      | 5 +----
 include/silo/config/config_exception.h                      | 5 +----
 include/silo/config/config_repository.h                     | 5 +----
 include/silo/config/database_config.h                       | 5 +----
 include/silo/database.h                                     | 5 +----
 include/silo/database_info.h                                | 5 +----
 include/silo/persistence/exception.h                        | 5 +----
 include/silo/prepare_dataset.h                              | 5 +----
 include/silo/preprocessing/metadata.h                       | 5 +----
 include/silo/preprocessing/metadata_validator.h             | 5 +----
 include/silo/preprocessing/pango_lineage_count.h            | 4 +---
 include/silo/preprocessing/partition.h                      | 5 +----
 include/silo/preprocessing/preprocessing_config.h           | 5 +----
 include/silo/preprocessing/preprocessing_config_reader.h    | 5 +----
 include/silo/preprocessing/preprocessing_exception.h        | 5 +----
 include/silo/query_engine/actions/aa_mutations.h            | 5 +----
 include/silo/query_engine/actions/action.h                  | 5 +----
 include/silo/query_engine/actions/aggregated.h              | 5 +----
 include/silo/query_engine/actions/details.h                 | 5 +----
 include/silo/query_engine/actions/fasta.h                   | 5 +----
 include/silo/query_engine/actions/fasta_aligned.h           | 5 +----
 include/silo/query_engine/actions/insertions.h              | 5 +----
 include/silo/query_engine/actions/nuc_mutations.h           | 5 +----
 include/silo/query_engine/actions/tuple.h                   | 5 +----
 .../silo/query_engine/filter_expressions/aa_symbol_equals.h | 5 +----
 include/silo/query_engine/filter_expressions/and.h          | 5 +----
 include/silo/query_engine/filter_expressions/date_between.h | 5 +----
 include/silo/query_engine/filter_expressions/exact.h        | 5 +----
 include/silo/query_engine/filter_expressions/expression.h   | 5 +----
 include/silo/query_engine/filter_expressions/false.h        | 5 +----
 .../silo/query_engine/filter_expressions/float_between.h    | 5 +----
 include/silo/query_engine/filter_expressions/float_equals.h | 5 +----
 .../silo/query_engine/filter_expressions/has_aa_mutation.h  | 5 +----
 include/silo/query_engine/filter_expressions/has_mutation.h | 5 +----
 .../query_engine/filter_expressions/insertion_contains.h    | 5 +----
 include/silo/query_engine/filter_expressions/int_between.h  | 5 +----
 include/silo/query_engine/filter_expressions/int_equals.h   | 5 +----
 include/silo/query_engine/filter_expressions/maybe.h        | 5 +----
 include/silo/query_engine/filter_expressions/negation.h     | 5 +----
 include/silo/query_engine/filter_expressions/nof.h          | 5 +----
 .../filter_expressions/nucleotide_symbol_equals.h           | 5 +----
 include/silo/query_engine/filter_expressions/or.h           | 5 +----
 .../query_engine/filter_expressions/pango_lineage_filter.h  | 5 +----
 .../silo/query_engine/filter_expressions/string_equals.h    | 5 +----
 include/silo/query_engine/filter_expressions/true.h         | 5 +----
 include/silo/query_engine/operator_result.h                 | 5 +----
 include/silo/query_engine/operators/bitmap_producer.h       | 5 +----
 include/silo/query_engine/operators/bitmap_selection.h      | 5 +----
 include/silo/query_engine/operators/complement.h            | 5 +----
 include/silo/query_engine/operators/empty.h                 | 5 +----
 include/silo/query_engine/operators/full.h                  | 5 +----
 include/silo/query_engine/operators/index_scan.h            | 5 +----
 include/silo/query_engine/operators/intersection.h          | 5 +----
 include/silo/query_engine/operators/operator.h              | 5 +----
 include/silo/query_engine/operators/range_selection.h       | 5 +----
 include/silo/query_engine/operators/selection.h             | 5 +----
 include/silo/query_engine/operators/threshold.h             | 5 +----
 include/silo/query_engine/operators/union.h                 | 5 +----
 include/silo/query_engine/query.h                           | 5 +----
 include/silo/query_engine/query_compilation_exception.h     | 5 +----
 include/silo/query_engine/query_engine.h                    | 5 +----
 include/silo/query_engine/query_parse_exception.h           | 5 +----
 include/silo/query_engine/query_result.h                    | 5 +----
 include/silo/roaring/roaring_serialize.h                    | 5 +----
 include/silo/storage/column/date_column.h                   | 5 +----
 include/silo/storage/column/float_column.h                  | 5 +----
 include/silo/storage/column/indexed_string_column.h         | 5 +----
 include/silo/storage/column/insertion_column.h              | 5 +----
 include/silo/storage/column/insertion_index.h               | 5 +----
 include/silo/storage/column/int_column.h                    | 5 +----
 include/silo/storage/column/pango_lineage_column.h          | 5 +----
 include/silo/storage/column/string_column.h                 | 5 +----
 include/silo/storage/column_group.h                         | 5 +----
 include/silo/storage/database_partition.h                   | 5 +----
 include/silo/storage/pango_lineage_alias.h                  | 5 +----
 include/silo/storage/reference_genomes.h                    | 5 +----
 include/silo/storage/sequence_store.h                       | 6 +-----
 include/silo/storage/serialize_optional.h                   | 5 +----
 include/silo_api/database_directory_watcher.h               | 5 +----
 include/silo_api/database_mutex.h                           | 5 +----
 include/silo_api/error_request_handler.h                    | 5 +----
 include/silo_api/info_handler.h                             | 5 +----
 include/silo_api/logging.h                                  | 5 +----
 include/silo_api/logging_request_handler.h                  | 5 +----
 include/silo_api/manual_poco_mocks.test.h                   | 5 +----
 include/silo_api/not_found_handler.h                        | 5 +----
 include/silo_api/query_handler.h                            | 5 +----
 include/silo_api/request_handler_factory.h                  | 5 +----
 include/silo_api/rest_resource.h                            | 5 +----
 include/silo_api/runtime_config.h                           | 5 +----
 include/silo_api/variant_json_serializer.h                  | 4 +---
 112 files changed, 112 insertions(+), 447 deletions(-)

diff --git a/include/silo/common/aa_symbols.h b/include/silo/common/aa_symbols.h
index 12ca60351..9a9352bcf 100644
--- a/include/silo/common/aa_symbols.h
+++ b/include/silo/common/aa_symbols.h
@@ -1,5 +1,4 @@
-#ifndef SILO_SymbolS_H
-#define SILO_SymbolS_H
+#pragma once
 
 #include <array>
 #include <iostream>
@@ -64,5 +63,3 @@ class AminoAcid {
 };
 }  // namespace silo
 // namespace silo
-
-#endif  // SILO_SymbolS_H
diff --git a/include/silo/common/bidirectional_map.h b/include/silo/common/bidirectional_map.h
index 46fceb6a8..92af4f3ef 100644
--- a/include/silo/common/bidirectional_map.h
+++ b/include/silo/common/bidirectional_map.h
@@ -1,5 +1,4 @@
-#ifndef SILO_BIDIRECTIONAL_MAP_H
-#define SILO_BIDIRECTIONAL_MAP_H
+#pragma once
 
 #include <cstdint>
 #include <optional>
@@ -45,5 +44,3 @@ class BidirectionalMap {
 };
 
 }  // namespace silo::common
-
-#endif  // SILO_BIDIRECTIONAL_MAP_H
diff --git a/include/silo/common/block_timer.h b/include/silo/common/block_timer.h
index 26604e286..83fe88651 100644
--- a/include/silo/common/block_timer.h
+++ b/include/silo/common/block_timer.h
@@ -1,5 +1,4 @@
-#ifndef SILO_BLOCK_TIMER_H
-#define SILO_BLOCK_TIMER_H
+#pragma once
 
 #include <chrono>
 
@@ -22,5 +21,3 @@ struct [[nodiscard]] BlockTimer {
 
    output_t untilNow() { return std::chrono::duration_cast<Unit>(Clock::now() - start).count(); }
 };
-
-#endif  // SILO_BLOCK_TIMER_H
diff --git a/include/silo/common/data_version.h b/include/silo/common/data_version.h
index d93d75989..c545199b5 100644
--- a/include/silo/common/data_version.h
+++ b/include/silo/common/data_version.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_COMMON_DATAVERSION_H_
-#define SILO_INCLUDE_SILO_COMMON_DATAVERSION_H_
+#pragma once
 
 #include <optional>
 #include <string>
@@ -30,5 +29,3 @@ class DataVersion {
 };
 
 }  // namespace silo
-
-#endif  // SILO_INCLUDE_SILO_COMMON_DATAVERSION_H_
diff --git a/include/silo/common/date.h b/include/silo/common/date.h
index 20348a7c5..131805f5e 100644
--- a/include/silo/common/date.h
+++ b/include/silo/common/date.h
@@ -1,5 +1,4 @@
-#ifndef SILO_DATE_H
-#define SILO_DATE_H
+#pragma once
 
 #include <cstdint>
 #include <optional>
@@ -14,5 +13,3 @@ silo::common::Date stringToDate(const std::string& value);
 std::optional<std::string> dateToString(silo::common::Date date);
 
 }  // namespace silo::common
-
-#endif  // SILO_DATE_H
diff --git a/include/silo/common/date_format_exception.h b/include/silo/common/date_format_exception.h
index 7ec219667..64c588fe7 100644
--- a/include/silo/common/date_format_exception.h
+++ b/include/silo/common/date_format_exception.h
@@ -1,5 +1,4 @@
-#ifndef SILO_DATE_FORMAT_EXCEPTION_H
-#define SILO_DATE_FORMAT_EXCEPTION_H
+#pragma once
 
 #include <stdexcept>
 #include <string>
@@ -12,5 +11,3 @@ class DateFormatException : public std::runtime_error {
 };
 
 }  // namespace silo::common
-
-#endif  // SILO_DATE_FORMAT_EXCEPTION_H
diff --git a/include/silo/common/fasta_format_exception.h b/include/silo/common/fasta_format_exception.h
index 9aeb96b6e..c7b7afb80 100644
--- a/include/silo/common/fasta_format_exception.h
+++ b/include/silo/common/fasta_format_exception.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FASTA_FORMAT_EXCEPTION_H
-#define SILO_FASTA_FORMAT_EXCEPTION_H
+#pragma once
 
 #include <stdexcept>
 #include <string>
@@ -12,5 +11,3 @@ class FastaFormatException : public std::runtime_error {
 };
 
 }  // namespace silo
-
-#endif  // SILO_FASTA_FORMAT_EXCEPTION_H
diff --git a/include/silo/common/fasta_reader.h b/include/silo/common/fasta_reader.h
index c31f9f5b6..a0d194b28 100644
--- a/include/silo/common/fasta_reader.h
+++ b/include/silo/common/fasta_reader.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FASTA_READER_H
-#define SILO_FASTA_READER_H
+#pragma once
 
 #include <filesystem>
 #include <iostream>
@@ -25,5 +24,3 @@ class FastaReader {
    void reset();
 };
 }  // namespace silo
-
-#endif  // SILO_FASTA_READER_H
diff --git a/include/silo/common/format_number.h b/include/silo/common/format_number.h
index e7bba7fbb..58adfba4d 100644
--- a/include/silo/common/format_number.h
+++ b/include/silo/common/format_number.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FORMAT_NUMBER_H
-#define SILO_FORMAT_NUMBER_H
+#pragma once
 
 #include <cstdint>
 #include <string>
@@ -9,5 +8,3 @@ namespace silo {
 std::string formatNumber(uint64_t number);
 
 }
-
-#endif  // SILO_FORMAT_NUMBER_H
diff --git a/include/silo/common/input_stream_wrapper.h b/include/silo/common/input_stream_wrapper.h
index 7ecee7694..7ef14e80f 100644
--- a/include/silo/common/input_stream_wrapper.h
+++ b/include/silo/common/input_stream_wrapper.h
@@ -1,5 +1,4 @@
-#ifndef SILO_ISTREAM_WRAPPER_H
-#define SILO_ISTREAM_WRAPPER_H
+#pragma once
 
 #include <filesystem>
 #include <fstream>
@@ -20,5 +19,3 @@ struct InputStreamWrapper {
    [[nodiscard]] std::istream& getInputStream() const;
 };
 }  // namespace silo
-
-#endif  // SILO_ISTREAM_WRAPPER_H
diff --git a/include/silo/common/log.h b/include/silo/common/log.h
index 7bdcd9db9..e3109185f 100644
--- a/include/silo/common/log.h
+++ b/include/silo/common/log.h
@@ -1,5 +1,4 @@
-#ifndef SILO_LOG_H
-#define SILO_LOG_H
+#pragma once
 
 #include <string>
 
@@ -10,5 +9,3 @@ static const std::string PERFORMANCE_LOGGER_NAME = "performance_logger";
 }
 
 #define LOG_PERFORMANCE(...) SPDLOG_LOGGER_INFO(spdlog::get(PERFORMANCE_LOGGER_NAME), __VA_ARGS__)
-
-#endif  // SILO_LOG_H
diff --git a/include/silo/common/nucleotide_symbols.h b/include/silo/common/nucleotide_symbols.h
index 7b7b87c7c..f2d341718 100644
--- a/include/silo/common/nucleotide_symbols.h
+++ b/include/silo/common/nucleotide_symbols.h
@@ -1,5 +1,4 @@
-#ifndef SILO_NUCLEOTIDE_SYMBOLS_H
-#define SILO_NUCLEOTIDE_SYMBOLS_H
+#pragma once
 
 #include <algorithm>
 #include <array>
@@ -71,5 +70,3 @@ class Nucleotide {
 };
 
 }  // namespace silo
-
-#endif  // SILO_NUCLEOTIDE_SYMBOLS_H
diff --git a/include/silo/common/pango_lineage.h b/include/silo/common/pango_lineage.h
index a350f6e3b..61493d3c8 100644
--- a/include/silo/common/pango_lineage.h
+++ b/include/silo/common/pango_lineage.h
@@ -1,5 +1,4 @@
-#ifndef SILO_PANGO_LINEAGE_H
-#define SILO_PANGO_LINEAGE_H
+#pragma once
 
 #include <cstddef>
 #include <cstdint>
@@ -38,5 +37,3 @@ template <>
 struct std::hash<silo::common::UnaliasedPangoLineage> {
    std::size_t operator()(const silo::common::UnaliasedPangoLineage& pango_lineage) const;
 };
-
-#endif  // SILO_PANGO_LINEAGE_H
diff --git a/include/silo/common/string.h b/include/silo/common/string.h
index 32d5cc828..512929894 100644
--- a/include/silo/common/string.h
+++ b/include/silo/common/string.h
@@ -1,5 +1,4 @@
-#ifndef SILO_STRING_H
-#define SILO_STRING_H
+#pragma once
 
 #include <array>
 #include <compare>
@@ -69,5 +68,3 @@ template <size_t I>
 struct std::hash<silo::common::String<I>> {
    std::size_t operator()(const silo::common::String<I>& str) const;
 };
-
-#endif  // SILO_STRING_H
diff --git a/include/silo/common/string_utils.h b/include/silo/common/string_utils.h
index 0cca97c48..f46f9f2a5 100644
--- a/include/silo/common/string_utils.h
+++ b/include/silo/common/string_utils.h
@@ -1,5 +1,4 @@
-#ifndef SILO_STRING_UTILS_H
-#define SILO_STRING_UTILS_H
+#pragma once
 
 #include <string>
 #include <string_view>
@@ -10,5 +9,3 @@ namespace silo {
 std::vector<std::string> splitBy(const std::string& value, const std::string_view delimiter);
 
 }  // namespace silo
-
-#endif  // SILO_STRING_UTILS_H
diff --git a/include/silo/common/symbol_map.h b/include/silo/common/symbol_map.h
index 78b75d703..7e71fbc5b 100644
--- a/include/silo/common/symbol_map.h
+++ b/include/silo/common/symbol_map.h
@@ -1,5 +1,4 @@
-#ifndef SILO_SYMBOL_MAP_H
-#define SILO_SYMBOL_MAP_H
+#pragma once
 
 #include <vector>
 
@@ -35,5 +34,3 @@ class SymbolMap {
 };
 
 }  // namespace silo
-
-#endif  // SILO_SYMBOL_MAP_H
diff --git a/include/silo/common/template_utils.h b/include/silo/common/template_utils.h
index 665a12893..116c12f96 100644
--- a/include/silo/common/template_utils.h
+++ b/include/silo/common/template_utils.h
@@ -1,5 +1,4 @@
-#ifndef SILO_TEMPLATE_UTILS_H
-#define SILO_TEMPLATE_UTILS_H
+#pragma once
 
 #include <cstddef>
 
@@ -22,5 +21,3 @@ struct NestedContainer<1, Container, ContainerArg, Base> {
 };
 
 }  // namespace silo
-
-#endif  // SILO_TEMPLATE_UTILS_H
diff --git a/include/silo/common/types.h b/include/silo/common/types.h
index eaa486c1e..d3354a9d7 100644
--- a/include/silo/common/types.h
+++ b/include/silo/common/types.h
@@ -1,5 +1,4 @@
-#ifndef SILO_TYPES_H
-#define SILO_TYPES_H
+#pragma once
 
 #include <cstddef>
 #include <cstdint>
@@ -8,5 +7,3 @@ namespace silo {
 // Referencing to silo internal pointers
 typedef uint32_t Idx;
 }  // namespace silo
-
-#endif  // SILO_TYPES_H
diff --git a/include/silo/common/zstd_compressor.h b/include/silo/common/zstd_compressor.h
index fc8bf6539..c69e28117 100644
--- a/include/silo/common/zstd_compressor.h
+++ b/include/silo/common/zstd_compressor.h
@@ -1,5 +1,4 @@
-#ifndef SILO_ZSTD_COMPRESSOR_H
-#define SILO_ZSTD_COMPRESSOR_H
+#pragma once
 
 #include <cstddef>
 #include <string>
@@ -28,5 +27,3 @@ class ZstdCompressor {
 };
 
 }  // namespace silo
-
-#endif  // SILO_ZSTD_COMPRESSOR_H
diff --git a/include/silo/common/zstd_decompressor.h b/include/silo/common/zstd_decompressor.h
index 51654a3c4..dcc2e8b76 100644
--- a/include/silo/common/zstd_decompressor.h
+++ b/include/silo/common/zstd_decompressor.h
@@ -1,5 +1,4 @@
-#ifndef SILO_ZSTD_DECOMPRESSOR_H
-#define SILO_ZSTD_DECOMPRESSOR_H
+#pragma once
 
 #include <string>
 
@@ -24,5 +23,3 @@ class ZstdDecompressor {
 };
 
 }  // namespace silo
-
-#endif  // SILO_ZSTD_DECOMPRESSOR_H
diff --git a/include/silo/common/zstdfasta_reader.h b/include/silo/common/zstdfasta_reader.h
index c02517427..0e9a66ab9 100644
--- a/include/silo/common/zstdfasta_reader.h
+++ b/include/silo/common/zstdfasta_reader.h
@@ -1,5 +1,4 @@
-#ifndef SILO_ZSTDFASTA_READER_H
-#define SILO_ZSTDFASTA_READER_H
+#pragma once
 
 #include <filesystem>
 #include <iostream>
@@ -34,5 +33,3 @@ class ZstdFastaReader {
    void reset();
 };
 }  // namespace silo
-
-#endif  // SILO_ZSTDFASTA_READER_H
diff --git a/include/silo/common/zstdfasta_writer.h b/include/silo/common/zstdfasta_writer.h
index f5c6c2142..cf8fca249 100644
--- a/include/silo/common/zstdfasta_writer.h
+++ b/include/silo/common/zstdfasta_writer.h
@@ -1,5 +1,4 @@
-#ifndef SILO_ZSTDFASTA_WRITER_H
-#define SILO_ZSTDFASTA_WRITER_H
+#pragma once
 
 #include <filesystem>
 #include <iostream>
@@ -39,5 +38,3 @@ class ZstdFastaWriter {
    void writeDefault(const std::string& key);
 };
 }  // namespace silo
-
-#endif  // SILO_ZSTDFASTA_WRITER_H
diff --git a/include/silo/config/config_exception.h b/include/silo/config/config_exception.h
index c94fd4c66..5f8d9fa44 100644
--- a/include/silo/config/config_exception.h
+++ b/include/silo/config/config_exception.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_CONFIG_CONFIG_EXCEPTION_H_
-#define SILO_INCLUDE_SILO_CONFIG_CONFIG_EXCEPTION_H_
+#pragma once
 
 #include <iostream>
 #include <stdexcept>
@@ -13,5 +12,3 @@ class ConfigException : public std::runtime_error {
 };
 
 }  // namespace silo::config
-
-#endif  // SILO_INCLUDE_SILO_CONFIG_CONFIG_EXCEPTION_H_
diff --git a/include/silo/config/config_repository.h b/include/silo/config/config_repository.h
index e51d3cef6..bbeb187ca 100644
--- a/include/silo/config/config_repository.h
+++ b/include/silo/config/config_repository.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_CONFIG_CONFIG_REPOSITORY_H_
-#define SILO_INCLUDE_SILO_CONFIG_CONFIG_REPOSITORY_H_
+#pragma once
 
 #include <filesystem>
 
@@ -19,5 +18,3 @@ class ConfigRepository {
 };
 
 }  // namespace silo::config
-
-#endif  // SILO_INCLUDE_SILO_CONFIG_CONFIG_REPOSITORY_H_
diff --git a/include/silo/config/database_config.h b/include/silo/config/database_config.h
index 4c03af553..33e00df82 100644
--- a/include/silo/config/database_config.h
+++ b/include/silo/config/database_config.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_CONFIG_DATABASECONFIG_H_
-#define SILO_INCLUDE_SILO_CONFIG_DATABASECONFIG_H_
+#pragma once
 
 #include <filesystem>
 #include <optional>
@@ -88,5 +87,3 @@ struct [[maybe_unused]] fmt::formatter<silo::config::ValueType> : fmt::formatter
       format_context& ctx
    ) -> decltype(ctx.out());
 };
-
-#endif  // SILO_INCLUDE_SILO_CONFIG_DATABASECONFIG_H_
diff --git a/include/silo/database.h b/include/silo/database.h
index 215c3e01f..8bc337265 100644
--- a/include/silo/database.h
+++ b/include/silo/database.h
@@ -1,5 +1,4 @@
-#ifndef SILO_DATABASE_H
-#define SILO_DATABASE_H
+#pragma once
 
 #include <cstddef>
 #include <cstdint>
@@ -108,5 +107,3 @@ class Database {
 };
 
 }  // namespace silo
-
-#endif  // SILO_DATABASE_H
diff --git a/include/silo/database_info.h b/include/silo/database_info.h
index f1b646e57..134ad18e1 100644
--- a/include/silo/database_info.h
+++ b/include/silo/database_info.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_API_DATABASE_INFO_H_
-#define SILO_INCLUDE_SILO_API_DATABASE_INFO_H_
+#pragma once
 
 #include <cinttypes>
 #include <map>
@@ -59,5 +58,3 @@ struct DetailedDatabaseInfo {
 };
 
 }  // namespace silo
-
-#endif  // SILO_INCLUDE_SILO_API_DATABASE_INFO_H_
diff --git a/include/silo/persistence/exception.h b/include/silo/persistence/exception.h
index 818eb15d6..600ea7bc9 100644
--- a/include/silo/persistence/exception.h
+++ b/include/silo/persistence/exception.h
@@ -1,5 +1,4 @@
-#ifndef SILO_LOADDATABASEEXCEPTION_H
-#define SILO_LOADDATABASEEXCEPTION_H
+#pragma once
 
 #include <iostream>
 #include <stdexcept>
@@ -18,5 +17,3 @@ class SaveDatabaseException : public std::runtime_error {
 };
 
 }  // namespace silo::persistence
-
-#endif  // SILO_LOADDATABASEEXCEPTION_H
diff --git a/include/silo/prepare_dataset.h b/include/silo/prepare_dataset.h
index 0f07c28a5..ea65aa535 100644
--- a/include/silo/prepare_dataset.h
+++ b/include/silo/prepare_dataset.h
@@ -1,5 +1,4 @@
-#ifndef SILO_PREPARE_DATASET_H
-#define SILO_PREPARE_DATASET_H
+#pragma once
 
 #include <filesystem>
 #include <iostream>
@@ -50,5 +49,3 @@ void sortChunks(
 );
 
 }  // namespace silo
-
-#endif  // SILO_PREPARE_DATASET_H
diff --git a/include/silo/preprocessing/metadata.h b/include/silo/preprocessing/metadata.h
index 8946de2c5..28b7c9714 100644
--- a/include/silo/preprocessing/metadata.h
+++ b/include/silo/preprocessing/metadata.h
@@ -1,5 +1,4 @@
-#ifndef SILO_SRC_SILO_STORAGE_CSV_READER_H_
-#define SILO_SRC_SILO_STORAGE_CSV_READER_H_
+#pragma once
 
 #include <filesystem>
 #include <iosfwd>
@@ -32,5 +31,3 @@ class MetadataWriter {
 };
 
 }  // namespace silo::preprocessing
-
-#endif  // SILO_SRC_SILO_STORAGE_CSV_READER_H_
diff --git a/include/silo/preprocessing/metadata_validator.h b/include/silo/preprocessing/metadata_validator.h
index 0a38bf30c..d0e562bb2 100644
--- a/include/silo/preprocessing/metadata_validator.h
+++ b/include/silo/preprocessing/metadata_validator.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_PREPROCESSING_METADATA_VALIDATOR_H_
-#define SILO_INCLUDE_SILO_PREPROCESSING_METADATA_VALIDATOR_H_
+#pragma once
 
 #include <filesystem>
 
@@ -21,5 +20,3 @@ class MetadataValidator {
 };
 
 }  // namespace silo::preprocessing
-
-#endif  // SILO_INCLUDE_SILO_PREPROCESSING_METADATA_VALIDATOR_H_
diff --git a/include/silo/preprocessing/pango_lineage_count.h b/include/silo/preprocessing/pango_lineage_count.h
index 8cad1fa77..33f738b11 100644
--- a/include/silo/preprocessing/pango_lineage_count.h
+++ b/include/silo/preprocessing/pango_lineage_count.h
@@ -1,5 +1,4 @@
-#ifndef SILO_PANGO_LINEAGE_COUNT_H
-#define SILO_PANGO_LINEAGE_COUNT_H
+#pragma once
 
 #include <cstdint>
 #include <filesystem>
@@ -39,4 +38,3 @@ PangoLineageCounts buildPangoLineageCounts(
 
 }  // namespace preprocessing
 }  // namespace silo
-#endif  // SILO_PANGO_LINEAGE_COUNT_H
diff --git a/include/silo/preprocessing/partition.h b/include/silo/preprocessing/partition.h
index c4b2e99f6..6e2edaa9e 100644
--- a/include/silo/preprocessing/partition.h
+++ b/include/silo/preprocessing/partition.h
@@ -1,5 +1,4 @@
-#ifndef SILO_PARTITION_H
-#define SILO_PARTITION_H
+#pragma once
 
 #include <cstdint>
 #include <filesystem>
@@ -121,5 +120,3 @@ template <>
 struct std::hash<silo::preprocessing::PartitionChunk> {
    std::size_t operator()(const silo::preprocessing::PartitionChunk& partition_chunk) const;
 };
-
-#endif  // SILO_PARTITION_H
diff --git a/include/silo/preprocessing/preprocessing_config.h b/include/silo/preprocessing/preprocessing_config.h
index 8025acac9..937194440 100644
--- a/include/silo/preprocessing/preprocessing_config.h
+++ b/include/silo/preprocessing/preprocessing_config.h
@@ -1,5 +1,4 @@
-#ifndef SILO_PREPROCESSING_CONFIG_H
-#define SILO_PREPROCESSING_CONFIG_H
+#pragma once
 
 #include <filesystem>
 #include <optional>
@@ -167,5 +166,3 @@ struct [[maybe_unused]] fmt::formatter<silo::preprocessing::PreprocessingConfig>
       format_context& ctx
    ) -> decltype(ctx.out());
 };
-
-#endif  // SILO_PREPROCESSING_CONFIG_H
diff --git a/include/silo/preprocessing/preprocessing_config_reader.h b/include/silo/preprocessing/preprocessing_config_reader.h
index 769d36ab0..01791aa18 100644
--- a/include/silo/preprocessing/preprocessing_config_reader.h
+++ b/include/silo/preprocessing/preprocessing_config_reader.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_API_PREPROCESSING_CONFIG_READER_H_
-#define SILO_INCLUDE_SILO_API_PREPROCESSING_CONFIG_READER_H_
+#pragma once
 
 #include <filesystem>
 #include <optional>
@@ -58,5 +57,3 @@ class PreprocessingConfigReader {
    virtual OptionalPreprocessingConfig readConfig(const std::filesystem::path& config_path) const;
 };
 }  // namespace silo::preprocessing
-
-#endif  // SILO_INCLUDE_SILO_API_PREPROCESSING_CONFIG_READER_H_
diff --git a/include/silo/preprocessing/preprocessing_exception.h b/include/silo/preprocessing/preprocessing_exception.h
index fb8dc2e3d..833053fe0 100644
--- a/include/silo/preprocessing/preprocessing_exception.h
+++ b/include/silo/preprocessing/preprocessing_exception.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_PREPROCESSING_PREPROCESSING_EXCEPTION_H_
-#define SILO_INCLUDE_SILO_PREPROCESSING_PREPROCESSING_EXCEPTION_H_
+#pragma once
 
 #include <iostream>
 #include <stdexcept>
@@ -12,5 +11,3 @@ class PreprocessingException : public std::runtime_error {
 };
 
 }  // namespace silo
-
-#endif  // SILO_INCLUDE_SILO_PREPROCESSING_PREPROCESSING_EXCEPTION_H_
diff --git a/include/silo/query_engine/actions/aa_mutations.h b/include/silo/query_engine/actions/aa_mutations.h
index 726b0dae8..bd8c674e7 100644
--- a/include/silo/query_engine/actions/aa_mutations.h
+++ b/include/silo/query_engine/actions/aa_mutations.h
@@ -1,5 +1,4 @@
-#ifndef SILO_AA_MUTATIONS_H
-#define SILO_AA_MUTATIONS_H
+#pragma once
 
 #include <array>
 #include <cstddef>
@@ -107,5 +106,3 @@ class AAMutations : public Action {
 void from_json(const nlohmann::json& json, std::unique_ptr<AAMutations>& action);
 
 }  // namespace silo::query_engine::actions
-
-#endif  // SILO_AA_MUTATIONS_H
diff --git a/include/silo/query_engine/actions/action.h b/include/silo/query_engine/actions/action.h
index a1d0aeead..71cab6609 100644
--- a/include/silo/query_engine/actions/action.h
+++ b/include/silo/query_engine/actions/action.h
@@ -1,5 +1,4 @@
-#ifndef SILO_ACTION_H
-#define SILO_ACTION_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -63,5 +62,3 @@ class Action {
 void from_json(const nlohmann::json& json, std::unique_ptr<Action>& action);
 
 }  // namespace silo::query_engine::actions
-
-#endif  // SILO_ACTION_H
diff --git a/include/silo/query_engine/actions/aggregated.h b/include/silo/query_engine/actions/aggregated.h
index 83367bf24..7ed04c75d 100644
--- a/include/silo/query_engine/actions/aggregated.h
+++ b/include/silo/query_engine/actions/aggregated.h
@@ -1,5 +1,4 @@
-#ifndef SILO_AGGREGATED_H
-#define SILO_AGGREGATED_H
+#pragma once
 
 #include <memory>
 #include <optional>
@@ -40,5 +39,3 @@ class Aggregated : public Action {
 void from_json(const nlohmann::json& json, std::unique_ptr<Aggregated>& action);
 
 }  // namespace silo::query_engine::actions
-
-#endif  // SILO_AGGREGATED_H
diff --git a/include/silo/query_engine/actions/details.h b/include/silo/query_engine/actions/details.h
index de4ef99f0..aaeec3326 100644
--- a/include/silo/query_engine/actions/details.h
+++ b/include/silo/query_engine/actions/details.h
@@ -1,5 +1,4 @@
-#ifndef SILO_DETAILS_H
-#define SILO_DETAILS_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -38,5 +37,3 @@ class Details : public Action {
 void from_json(const nlohmann::json& json, std::unique_ptr<Details>& action);
 
 }  // namespace silo::query_engine::actions
-
-#endif  // SILO_DETAILS_H
diff --git a/include/silo/query_engine/actions/fasta.h b/include/silo/query_engine/actions/fasta.h
index 03d6c5e8e..f26e38c9a 100644
--- a/include/silo/query_engine/actions/fasta.h
+++ b/include/silo/query_engine/actions/fasta.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FASTA_H
-#define SILO_FASTA_H
+#pragma once
 
 #include <memory>
 #include <vector>
@@ -32,5 +31,3 @@ class Fasta : public Action {
 void from_json(const nlohmann::json& json, std::unique_ptr<Fasta>& action);
 
 }  // namespace silo::query_engine::actions
-
-#endif  // SILO_FASTA_H
diff --git a/include/silo/query_engine/actions/fasta_aligned.h b/include/silo/query_engine/actions/fasta_aligned.h
index aa884e544..607b124b7 100644
--- a/include/silo/query_engine/actions/fasta_aligned.h
+++ b/include/silo/query_engine/actions/fasta_aligned.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FASTA_ALIGNED_H
-#define SILO_FASTA_ALIGNED_H
+#pragma once
 
 #include <memory>
 #include <vector>
@@ -34,5 +33,3 @@ class FastaAligned : public Action {
 void from_json(const nlohmann::json& json, std::unique_ptr<FastaAligned>& action);
 
 }  // namespace silo::query_engine::actions
-
-#endif  // SILO_FASTA_ALIGNED_H
diff --git a/include/silo/query_engine/actions/insertions.h b/include/silo/query_engine/actions/insertions.h
index a640de055..e77925fba 100644
--- a/include/silo/query_engine/actions/insertions.h
+++ b/include/silo/query_engine/actions/insertions.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INSERTIONS_H
-#define SILO_INSERTIONS_H
+#pragma once
 
 #include "silo/query_engine/actions/action.h"
 #include "silo/storage/column/insertion_column.h"
@@ -74,5 +73,3 @@ void from_json(
 
 }  // namespace actions
 }  // namespace silo::query_engine
-
-#endif  // SILO_INSERTIONS_H
diff --git a/include/silo/query_engine/actions/nuc_mutations.h b/include/silo/query_engine/actions/nuc_mutations.h
index b6758a6f2..31cd6a0ae 100644
--- a/include/silo/query_engine/actions/nuc_mutations.h
+++ b/include/silo/query_engine/actions/nuc_mutations.h
@@ -1,5 +1,4 @@
-#ifndef SILO_NUC_MUTATIONS_H
-#define SILO_NUC_MUTATIONS_H
+#pragma once
 
 #include <array>
 #include <cstddef>
@@ -84,5 +83,3 @@ class NucMutations : public Action {
 void from_json(const nlohmann::json& json, std::unique_ptr<NucMutations>& action);
 
 }  // namespace silo::query_engine::actions
-
-#endif  // SILO_NUC_MUTATIONS_H
diff --git a/include/silo/query_engine/actions/tuple.h b/include/silo/query_engine/actions/tuple.h
index d99348b2e..e5673ba0e 100644
--- a/include/silo/query_engine/actions/tuple.h
+++ b/include/silo/query_engine/actions/tuple.h
@@ -1,5 +1,4 @@
-#ifndef SILO_TUPLE_H
-#define SILO_TUPLE_H
+#pragma once
 
 #include <optional>
 #include <string>
@@ -96,5 +95,3 @@ class TupleFactory {
 };
 
 }  // namespace silo::query_engine::actions
-
-#endif  // SILO_TUPLE_H
diff --git a/include/silo/query_engine/filter_expressions/aa_symbol_equals.h b/include/silo/query_engine/filter_expressions/aa_symbol_equals.h
index a4aebaf82..e7c154378 100644
--- a/include/silo/query_engine/filter_expressions/aa_symbol_equals.h
+++ b/include/silo/query_engine/filter_expressions/aa_symbol_equals.h
@@ -1,5 +1,4 @@
-#ifndef SILO_AA_SYMBOL_EQUALS_H
-#define SILO_AA_SYMBOL_EQUALS_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -46,5 +45,3 @@ struct AASymbolEquals : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<AASymbolEquals>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_AA_SYMBOL_EQUALS_H
diff --git a/include/silo/query_engine/filter_expressions/and.h b/include/silo/query_engine/filter_expressions/and.h
index fecdd6e12..05ccef32a 100644
--- a/include/silo/query_engine/filter_expressions/and.h
+++ b/include/silo/query_engine/filter_expressions/and.h
@@ -1,5 +1,4 @@
-#ifndef SILO_AND_H
-#define SILO_AND_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -54,5 +53,3 @@ struct And : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<And>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_AND_H
diff --git a/include/silo/query_engine/filter_expressions/date_between.h b/include/silo/query_engine/filter_expressions/date_between.h
index 0b284bff7..76b50dda5 100644
--- a/include/silo/query_engine/filter_expressions/date_between.h
+++ b/include/silo/query_engine/filter_expressions/date_between.h
@@ -1,5 +1,4 @@
-#ifndef SILO_DATE_BETWEEN_H
-#define SILO_DATE_BETWEEN_H
+#pragma once
 
 #include <memory>
 #include <optional>
@@ -65,5 +64,3 @@ struct DateBetween : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<DateBetween>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_DATE_BETWEEN_H
diff --git a/include/silo/query_engine/filter_expressions/exact.h b/include/silo/query_engine/filter_expressions/exact.h
index 2e9ad07c4..f05a30051 100644
--- a/include/silo/query_engine/filter_expressions/exact.h
+++ b/include/silo/query_engine/filter_expressions/exact.h
@@ -1,5 +1,4 @@
-#ifndef SILO_EXACT_H
-#define SILO_EXACT_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -37,5 +36,3 @@ class Exact : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<Exact>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_EXACT_H
diff --git a/include/silo/query_engine/filter_expressions/expression.h b/include/silo/query_engine/filter_expressions/expression.h
index a02a322ef..0ab39aa48 100644
--- a/include/silo/query_engine/filter_expressions/expression.h
+++ b/include/silo/query_engine/filter_expressions/expression.h
@@ -1,5 +1,4 @@
-#ifndef SILO_EXPRESSION_H
-#define SILO_EXPRESSION_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -41,5 +40,3 @@ void from_json(const nlohmann::json& json, std::unique_ptr<Expression>& filter);
 Expression::AmbiguityMode invertMode(Expression::AmbiguityMode mode);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_EXPRESSION_H
diff --git a/include/silo/query_engine/filter_expressions/false.h b/include/silo/query_engine/filter_expressions/false.h
index 0bee8bb8d..606c91e45 100644
--- a/include/silo/query_engine/filter_expressions/false.h
+++ b/include/silo/query_engine/filter_expressions/false.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FALSE_H
-#define SILO_FALSE_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -37,5 +36,3 @@ struct False : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<False>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_FALSE_H
diff --git a/include/silo/query_engine/filter_expressions/float_between.h b/include/silo/query_engine/filter_expressions/float_between.h
index 2f2ab56e8..1918d45b8 100644
--- a/include/silo/query_engine/filter_expressions/float_between.h
+++ b/include/silo/query_engine/filter_expressions/float_between.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FLOAT_BETWEEN_H
-#define SILO_FLOAT_BETWEEN_H
+#pragma once
 
 #include <memory>
 #include <optional>
@@ -44,5 +43,3 @@ class FloatBetween : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<FloatBetween>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_FLOAT_BETWEEN_H
diff --git a/include/silo/query_engine/filter_expressions/float_equals.h b/include/silo/query_engine/filter_expressions/float_equals.h
index 9f8a315a0..3685664a9 100644
--- a/include/silo/query_engine/filter_expressions/float_equals.h
+++ b/include/silo/query_engine/filter_expressions/float_equals.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FLOAT_EQUALS_H
-#define SILO_FLOAT_EQUALS_H
+#pragma once
 
 #include <memory>
 #include <optional>
@@ -43,5 +42,3 @@ class FloatEquals : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<FloatEquals>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_FLOAT_EQUALS_H
diff --git a/include/silo/query_engine/filter_expressions/has_aa_mutation.h b/include/silo/query_engine/filter_expressions/has_aa_mutation.h
index 4f9ae0372..b7fd6d0dc 100644
--- a/include/silo/query_engine/filter_expressions/has_aa_mutation.h
+++ b/include/silo/query_engine/filter_expressions/has_aa_mutation.h
@@ -1,5 +1,4 @@
-#ifndef SILO_HAS_AA_MUTATION_H
-#define SILO_HAS_AA_MUTATION_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -43,5 +42,3 @@ struct HasAAMutation : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<HasAAMutation>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_HAS_AA_MUTATION_H
diff --git a/include/silo/query_engine/filter_expressions/has_mutation.h b/include/silo/query_engine/filter_expressions/has_mutation.h
index fcaa5b58e..effc72929 100644
--- a/include/silo/query_engine/filter_expressions/has_mutation.h
+++ b/include/silo/query_engine/filter_expressions/has_mutation.h
@@ -1,5 +1,4 @@
-#ifndef SILO_HAS_MUTATION_H
-#define SILO_HAS_MUTATION_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -43,5 +42,3 @@ struct HasMutation : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<HasMutation>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_HAS_MUTATION_H
diff --git a/include/silo/query_engine/filter_expressions/insertion_contains.h b/include/silo/query_engine/filter_expressions/insertion_contains.h
index b6bd07dad..2fb6cc427 100644
--- a/include/silo/query_engine/filter_expressions/insertion_contains.h
+++ b/include/silo/query_engine/filter_expressions/insertion_contains.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INSERTION_CONTAINS_H
-#define SILO_INSERTION_CONTAINS_H
+#pragma once
 
 #include <memory>
 #include <optional>
@@ -49,5 +48,3 @@ template <typename SymbolType>
 void from_json(const nlohmann::json& json, std::unique_ptr<InsertionContains<SymbolType>>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_INSERTION_CONTAINS_H
diff --git a/include/silo/query_engine/filter_expressions/int_between.h b/include/silo/query_engine/filter_expressions/int_between.h
index ffcf364da..69a776c6b 100644
--- a/include/silo/query_engine/filter_expressions/int_between.h
+++ b/include/silo/query_engine/filter_expressions/int_between.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INT_BETWEEN_H
-#define SILO_INT_BETWEEN_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -49,5 +48,3 @@ struct IntBetween : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<IntBetween>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_INT_BETWEEN_H
diff --git a/include/silo/query_engine/filter_expressions/int_equals.h b/include/silo/query_engine/filter_expressions/int_equals.h
index 726f48935..997f601d3 100644
--- a/include/silo/query_engine/filter_expressions/int_equals.h
+++ b/include/silo/query_engine/filter_expressions/int_equals.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INT_EQUALS_H
-#define SILO_INT_EQUALS_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -42,5 +41,3 @@ struct IntEquals : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<IntEquals>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_INT_EQUALS_H
diff --git a/include/silo/query_engine/filter_expressions/maybe.h b/include/silo/query_engine/filter_expressions/maybe.h
index ba4b68168..07856aa83 100644
--- a/include/silo/query_engine/filter_expressions/maybe.h
+++ b/include/silo/query_engine/filter_expressions/maybe.h
@@ -1,5 +1,4 @@
-#ifndef SILO_MAYBE_H
-#define SILO_MAYBE_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -36,5 +35,3 @@ struct Maybe : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<Maybe>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_MAYBE_H
diff --git a/include/silo/query_engine/filter_expressions/negation.h b/include/silo/query_engine/filter_expressions/negation.h
index 9e9c39199..b81c68ed9 100644
--- a/include/silo/query_engine/filter_expressions/negation.h
+++ b/include/silo/query_engine/filter_expressions/negation.h
@@ -1,5 +1,4 @@
-#ifndef SILO_NEGATION_H
-#define SILO_NEGATION_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -41,5 +40,3 @@ class Negation : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<Negation>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_NEGATION_H
diff --git a/include/silo/query_engine/filter_expressions/nof.h b/include/silo/query_engine/filter_expressions/nof.h
index fe7b3b51e..e1bd195ee 100644
--- a/include/silo/query_engine/filter_expressions/nof.h
+++ b/include/silo/query_engine/filter_expressions/nof.h
@@ -1,5 +1,4 @@
-#ifndef SILO_NOF_H
-#define SILO_NOF_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -65,5 +64,3 @@ struct NOf : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<NOf>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_NOF_H
diff --git a/include/silo/query_engine/filter_expressions/nucleotide_symbol_equals.h b/include/silo/query_engine/filter_expressions/nucleotide_symbol_equals.h
index eeedfaf44..a73a5338e 100644
--- a/include/silo/query_engine/filter_expressions/nucleotide_symbol_equals.h
+++ b/include/silo/query_engine/filter_expressions/nucleotide_symbol_equals.h
@@ -1,5 +1,4 @@
-#ifndef SILO_NUCLEOTIDE_SYMBOL_EQUALS_H
-#define SILO_NUCLEOTIDE_SYMBOL_EQUALS_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -48,5 +47,3 @@ struct NucleotideSymbolEquals : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<NucleotideSymbolEquals>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_NUCLEOTIDE_SYMBOL_EQUALS_H
diff --git a/include/silo/query_engine/filter_expressions/or.h b/include/silo/query_engine/filter_expressions/or.h
index 75f736a7e..adad21f5e 100644
--- a/include/silo/query_engine/filter_expressions/or.h
+++ b/include/silo/query_engine/filter_expressions/or.h
@@ -1,5 +1,4 @@
-#ifndef SILO_OR_H
-#define SILO_OR_H
+#pragma once
 
 #include <memory>
 #include <vector>
@@ -39,5 +38,3 @@ struct Or : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<Or>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_OR_H
diff --git a/include/silo/query_engine/filter_expressions/pango_lineage_filter.h b/include/silo/query_engine/filter_expressions/pango_lineage_filter.h
index b8669827a..578945d32 100644
--- a/include/silo/query_engine/filter_expressions/pango_lineage_filter.h
+++ b/include/silo/query_engine/filter_expressions/pango_lineage_filter.h
@@ -1,5 +1,4 @@
-#ifndef SILO_PANGO_LINEAGE_FILTER_H
-#define SILO_PANGO_LINEAGE_FILTER_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -45,5 +44,3 @@ struct PangoLineageFilter : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<PangoLineageFilter>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_PANGO_LINEAGE_FILTER_H
diff --git a/include/silo/query_engine/filter_expressions/string_equals.h b/include/silo/query_engine/filter_expressions/string_equals.h
index 1201176da..5c064a681 100644
--- a/include/silo/query_engine/filter_expressions/string_equals.h
+++ b/include/silo/query_engine/filter_expressions/string_equals.h
@@ -1,5 +1,4 @@
-#ifndef SILO_STRING_EQUALS_H
-#define SILO_STRING_EQUALS_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -41,5 +40,3 @@ struct StringEquals : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<StringEquals>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_STRING_EQUALS_H
diff --git a/include/silo/query_engine/filter_expressions/true.h b/include/silo/query_engine/filter_expressions/true.h
index d982b4381..653d344df 100644
--- a/include/silo/query_engine/filter_expressions/true.h
+++ b/include/silo/query_engine/filter_expressions/true.h
@@ -1,5 +1,4 @@
-#ifndef SILO_TRUE_H
-#define SILO_TRUE_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -36,5 +35,3 @@ struct True : public Expression {
 void from_json(const nlohmann::json& json, std::unique_ptr<True>& filter);
 
 }  // namespace silo::query_engine::filter_expressions
-
-#endif  // SILO_TRUE_H
diff --git a/include/silo/query_engine/operator_result.h b/include/silo/query_engine/operator_result.h
index ffca320ca..e702b17ec 100644
--- a/include/silo/query_engine/operator_result.h
+++ b/include/silo/query_engine/operator_result.h
@@ -1,5 +1,4 @@
-#ifndef SILO_OPERATOR_RESULT_H
-#define SILO_OPERATOR_RESULT_H
+#pragma once
 
 #include <type_traits>
 
@@ -35,5 +34,3 @@ struct OperatorResult {
 };
 
 }  // namespace silo::query_engine
-
-#endif  // SILO_OPERATOR_RESULT_H
diff --git a/include/silo/query_engine/operators/bitmap_producer.h b/include/silo/query_engine/operators/bitmap_producer.h
index 92239ed9c..4c5e9c21a 100644
--- a/include/silo/query_engine/operators/bitmap_producer.h
+++ b/include/silo/query_engine/operators/bitmap_producer.h
@@ -1,5 +1,4 @@
-#ifndef SILO_BITMAP_PRODUCER_H
-#define SILO_BITMAP_PRODUCER_H
+#pragma once
 
 #include <cstdint>
 #include <functional>
@@ -37,5 +36,3 @@ class BitmapProducer : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_BITMAP_PRODUCER_H
diff --git a/include/silo/query_engine/operators/bitmap_selection.h b/include/silo/query_engine/operators/bitmap_selection.h
index 47242c3e1..9ddf515ab 100644
--- a/include/silo/query_engine/operators/bitmap_selection.h
+++ b/include/silo/query_engine/operators/bitmap_selection.h
@@ -1,5 +1,4 @@
-#ifndef SILO_SEQUENCE_SELECTION_H
-#define SILO_SEQUENCE_SELECTION_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -46,5 +45,3 @@ class BitmapSelection : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_SEQUENCE_SELECTION_H
diff --git a/include/silo/query_engine/operators/complement.h b/include/silo/query_engine/operators/complement.h
index f4837a5fb..17f8132ec 100644
--- a/include/silo/query_engine/operators/complement.h
+++ b/include/silo/query_engine/operators/complement.h
@@ -1,5 +1,4 @@
-#ifndef SILO_COMPLEMENT_H
-#define SILO_COMPLEMENT_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -44,5 +43,3 @@ class Complement : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_COMPLEMENT_H
diff --git a/include/silo/query_engine/operators/empty.h b/include/silo/query_engine/operators/empty.h
index 058d6cce6..82b02af44 100644
--- a/include/silo/query_engine/operators/empty.h
+++ b/include/silo/query_engine/operators/empty.h
@@ -1,5 +1,4 @@
-#ifndef SILO_EMPTY_H
-#define SILO_EMPTY_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -30,5 +29,3 @@ class Empty : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_EMPTY_H
diff --git a/include/silo/query_engine/operators/full.h b/include/silo/query_engine/operators/full.h
index 4e832d0cf..78d5c560b 100644
--- a/include/silo/query_engine/operators/full.h
+++ b/include/silo/query_engine/operators/full.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FULL_H
-#define SILO_FULL_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -29,5 +28,3 @@ class Full : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_FULL_H
diff --git a/include/silo/query_engine/operators/index_scan.h b/include/silo/query_engine/operators/index_scan.h
index 4a7354700..accb6e942 100644
--- a/include/silo/query_engine/operators/index_scan.h
+++ b/include/silo/query_engine/operators/index_scan.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INDEX_SCAN_H
-#define SILO_INDEX_SCAN_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -35,5 +34,3 @@ class IndexScan : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_INDEX_SCAN_H
diff --git a/include/silo/query_engine/operators/intersection.h b/include/silo/query_engine/operators/intersection.h
index dd53e55ba..1d17fbcb3 100644
--- a/include/silo/query_engine/operators/intersection.h
+++ b/include/silo/query_engine/operators/intersection.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INTERSECTION_H
-#define SILO_INTERSECTION_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -42,5 +41,3 @@ class Intersection : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_INTERSECTION_H
diff --git a/include/silo/query_engine/operators/operator.h b/include/silo/query_engine/operators/operator.h
index 60cb9ead4..31eca9ebc 100644
--- a/include/silo/query_engine/operators/operator.h
+++ b/include/silo/query_engine/operators/operator.h
@@ -1,5 +1,4 @@
-#ifndef SILO_OPERATOR_H
-#define SILO_OPERATOR_H
+#pragma once
 
 #include <memory>
 #include <string>
@@ -40,5 +39,3 @@ class Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_OPERATOR_H
diff --git a/include/silo/query_engine/operators/range_selection.h b/include/silo/query_engine/operators/range_selection.h
index 2274fe19f..08cf035ff 100644
--- a/include/silo/query_engine/operators/range_selection.h
+++ b/include/silo/query_engine/operators/range_selection.h
@@ -1,5 +1,4 @@
-#ifndef SILO_RANGE_SELECTION_H
-#define SILO_RANGE_SELECTION_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -40,5 +39,3 @@ class RangeSelection : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_RANGE_SELECTION_H
diff --git a/include/silo/query_engine/operators/selection.h b/include/silo/query_engine/operators/selection.h
index 68b01d3a3..b750058d9 100644
--- a/include/silo/query_engine/operators/selection.h
+++ b/include/silo/query_engine/operators/selection.h
@@ -1,5 +1,4 @@
-#ifndef SILO_SELECTION_H
-#define SILO_SELECTION_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -85,5 +84,3 @@ class Selection : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_SELECTION_H
diff --git a/include/silo/query_engine/operators/threshold.h b/include/silo/query_engine/operators/threshold.h
index 5690bac11..ee1a7c2bb 100644
--- a/include/silo/query_engine/operators/threshold.h
+++ b/include/silo/query_engine/operators/threshold.h
@@ -1,5 +1,4 @@
-#ifndef SILO_THRESHOLD_H
-#define SILO_THRESHOLD_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -41,5 +40,3 @@ class Threshold : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_THRESHOLD_H
diff --git a/include/silo/query_engine/operators/union.h b/include/silo/query_engine/operators/union.h
index f9e882ba8..9bcc9c1f3 100644
--- a/include/silo/query_engine/operators/union.h
+++ b/include/silo/query_engine/operators/union.h
@@ -1,5 +1,4 @@
-#ifndef SILO_UNION_H
-#define SILO_UNION_H
+#pragma once
 
 #include <cstdint>
 #include <memory>
@@ -36,5 +35,3 @@ class Union : public Operator {
 };
 
 }  // namespace silo::query_engine::operators
-
-#endif  // SILO_UNION_H
diff --git a/include/silo/query_engine/query.h b/include/silo/query_engine/query.h
index 1b97a0d71..78054808d 100644
--- a/include/silo/query_engine/query.h
+++ b/include/silo/query_engine/query.h
@@ -1,5 +1,4 @@
-#ifndef SILO_QUERY_H
-#define SILO_QUERY_H
+#pragma once
 
 #include <memory>
 
@@ -23,5 +22,3 @@ struct Query {
 };
 
 }  // namespace silo::query_engine
-
-#endif  // SILO_QUERY_H
diff --git a/include/silo/query_engine/query_compilation_exception.h b/include/silo/query_engine/query_compilation_exception.h
index 44fcbe45b..bcbcfa2a0 100644
--- a/include/silo/query_engine/query_compilation_exception.h
+++ b/include/silo/query_engine/query_compilation_exception.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_QUERY_ENGINE_QUERY_COMPILATION_EXCEPTION_H_
-#define SILO_INCLUDE_SILO_QUERY_ENGINE_QUERY_COMPILATION_EXCEPTION_H_
+#pragma once
 
 #include <iostream>
 #include <stdexcept>
@@ -12,5 +11,3 @@ class [[maybe_unused]] QueryCompilationException : public std::runtime_error {
    [[maybe_unused]] QueryCompilationException(const std::string& error_message);
 };
 }  // namespace silo
-
-#endif  // SILO_INCLUDE_SILO_QUERY_ENGINE_QUERY_COMPILATION_EXCEPTION_H_
diff --git a/include/silo/query_engine/query_engine.h b/include/silo/query_engine/query_engine.h
index f65bf0589..2314d8069 100644
--- a/include/silo/query_engine/query_engine.h
+++ b/include/silo/query_engine/query_engine.h
@@ -1,5 +1,4 @@
-#ifndef SILO_QUERY_ENGINE_H
-#define SILO_QUERY_ENGINE_H
+#pragma once
 
 #include <iostream>
 #include <memory>
@@ -32,5 +31,3 @@ class QueryEngine {
 QueryResult executeQuery(const Database& database, const std::string& query);
 
 }  // namespace silo::query_engine
-
-#endif  // SILO_QUERY_ENGINE_H
diff --git a/include/silo/query_engine/query_parse_exception.h b/include/silo/query_engine/query_parse_exception.h
index 62f7c86ff..9d822e05c 100644
--- a/include/silo/query_engine/query_parse_exception.h
+++ b/include/silo/query_engine/query_parse_exception.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_QUERY_ENGINE_QUERY_PARSE_EXCEPTION_H_
-#define SILO_INCLUDE_SILO_QUERY_ENGINE_QUERY_PARSE_EXCEPTION_H_
+#pragma once
 
 #include <iostream>
 #include <stdexcept>
@@ -17,5 +16,3 @@ class [[maybe_unused]] QueryParseException : public std::runtime_error {
    [[maybe_unused]] QueryParseException(const std::string& error_message);
 };
 }  // namespace silo
-
-#endif  // SILO_INCLUDE_SILO_QUERY_ENGINE_QUERY_PARSE_EXCEPTION_H_
diff --git a/include/silo/query_engine/query_result.h b/include/silo/query_engine/query_result.h
index cce1786ac..e862eb470 100644
--- a/include/silo/query_engine/query_result.h
+++ b/include/silo/query_engine/query_result.h
@@ -1,5 +1,4 @@
-#ifndef SILO_QUERY_ENGINE_RESULT_H
-#define SILO_QUERY_ENGINE_RESULT_H
+#pragma once
 
 #include <cstdint>
 #include <map>
@@ -26,5 +25,3 @@ void to_json(nlohmann::json& json, const QueryResult& query_result);
 // NOLINTEND(readability-identifier-naming)
 
 }  // namespace silo::query_engine
-
-#endif  // SILO_QUERY_ENGINE_RESULT_H
diff --git a/include/silo/roaring/roaring_serialize.h b/include/silo/roaring/roaring_serialize.h
index 5e72957b5..121e5b763 100644
--- a/include/silo/roaring/roaring_serialize.h
+++ b/include/silo/roaring/roaring_serialize.h
@@ -1,5 +1,4 @@
-#ifndef SILO_ROARING_SERIALIZE_H
-#define SILO_ROARING_SERIALIZE_H
+#pragma once
 
 #include <boost/exception/diagnostic_information.hpp>
 #include <boost/iostreams/copy.hpp>
@@ -45,5 +44,3 @@ template <class Archive>
 }
 }  // namespace boost::serialization
 // NOLINTEND
-
-#endif  // SILO_ROARING_SERIALIZE_H
diff --git a/include/silo/storage/column/date_column.h b/include/silo/storage/column/date_column.h
index f51c93d61..bbf25ad90 100644
--- a/include/silo/storage/column/date_column.h
+++ b/include/silo/storage/column/date_column.h
@@ -1,5 +1,4 @@
-#ifndef SILO_DATE_COLUMN_H
-#define SILO_DATE_COLUMN_H
+#pragma once
 
 #include <cstdint>
 #include <deque>
@@ -62,5 +61,3 @@ class DateColumn {
 };
 
 }  // namespace silo::storage::column
-
-#endif  // SILO_DATE_COLUMN_H
diff --git a/include/silo/storage/column/float_column.h b/include/silo/storage/column/float_column.h
index 5a096c099..d0654861f 100644
--- a/include/silo/storage/column/float_column.h
+++ b/include/silo/storage/column/float_column.h
@@ -1,5 +1,4 @@
-#ifndef SILO_FLOAT_COLUMN_H
-#define SILO_FLOAT_COLUMN_H
+#pragma once
 
 #include <cstdint>
 #include <deque>
@@ -51,5 +50,3 @@ class FloatColumn {
 };
 
 }  // namespace silo::storage::column
-
-#endif  // SILO_FLOAT_COLUMN_H
diff --git a/include/silo/storage/column/indexed_string_column.h b/include/silo/storage/column/indexed_string_column.h
index e33171147..32eb11d1f 100644
--- a/include/silo/storage/column/indexed_string_column.h
+++ b/include/silo/storage/column/indexed_string_column.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INDEXED_STRING_COLUMN_H
-#define SILO_INDEXED_STRING_COLUMN_H
+#pragma once
 
 #include <cstdint>
 #include <deque>
@@ -69,5 +68,3 @@ class IndexedStringColumn {
 };
 
 }  // namespace silo::storage::column
-
-#endif  // SILO_INDEXED_STRING_COLUMN_H
diff --git a/include/silo/storage/column/insertion_column.h b/include/silo/storage/column/insertion_column.h
index aa4722ad0..4311ce22c 100644
--- a/include/silo/storage/column/insertion_column.h
+++ b/include/silo/storage/column/insertion_column.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INSERTION_COLUMN_H
-#define SILO_INSERTION_COLUMN_H
+#pragma once
 
 #include <cstdint>
 #include <deque>
@@ -89,5 +88,3 @@ class InsertionColumn {
 };
 
 }  // namespace silo::storage::column
-
-#endif  // SILO_INSERTION_COLUMN_H
diff --git a/include/silo/storage/column/insertion_index.h b/include/silo/storage/column/insertion_index.h
index 84bd46513..4a49bdd3f 100644
--- a/include/silo/storage/column/insertion_index.h
+++ b/include/silo/storage/column/insertion_index.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INSERTION_INDEX_H
-#define SILO_INSERTION_INDEX_H
+#pragma once
 
 #include <array>
 #include <memory>
@@ -111,5 +110,3 @@ class InsertionIndex {
 };
 
 }  // namespace silo::storage::column::insertion
-
-#endif  // SILO_INSERTION_INDEX_H
diff --git a/include/silo/storage/column/int_column.h b/include/silo/storage/column/int_column.h
index 6e730dda0..9505dc479 100644
--- a/include/silo/storage/column/int_column.h
+++ b/include/silo/storage/column/int_column.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INT_COLUMN_H
-#define SILO_INT_COLUMN_H
+#pragma once
 
 #include <cstdint>
 #include <deque>
@@ -55,5 +54,3 @@ class IntColumn {
 };
 
 }  // namespace silo::storage::column
-
-#endif  // SILO_INT_COLUMN_H
diff --git a/include/silo/storage/column/pango_lineage_column.h b/include/silo/storage/column/pango_lineage_column.h
index ac4192ddf..f021ac3a9 100644
--- a/include/silo/storage/column/pango_lineage_column.h
+++ b/include/silo/storage/column/pango_lineage_column.h
@@ -1,5 +1,4 @@
-#ifndef SILO_PANGO_LINEAGE_COLUMN_H
-#define SILO_PANGO_LINEAGE_COLUMN_H
+#pragma once
 
 #include <cstddef>
 #include <cstdint>
@@ -84,5 +83,3 @@ class PangoLineageColumn {
 };
 
 }  // namespace silo::storage::column
-
-#endif  // SILO_PANGO_LINEAGE_COLUMN_H
diff --git a/include/silo/storage/column/string_column.h b/include/silo/storage/column/string_column.h
index 5f2964b95..7898c2142 100644
--- a/include/silo/storage/column/string_column.h
+++ b/include/silo/storage/column/string_column.h
@@ -1,5 +1,4 @@
-#ifndef SILO_STRING_COLUMN_H
-#define SILO_STRING_COLUMN_H
+#pragma once
 
 #include <cstdint>
 #include <deque>
@@ -75,5 +74,3 @@ class StringColumn {
 };
 
 }  // namespace silo::storage::column
-
-#endif  // SILO_STRING_COLUMN_H
diff --git a/include/silo/storage/column_group.h b/include/silo/storage/column_group.h
index 770fd7be6..16bcc975f 100644
--- a/include/silo/storage/column_group.h
+++ b/include/silo/storage/column_group.h
@@ -1,5 +1,4 @@
-#ifndef SILO_COLUMN_GROUP_H
-#define SILO_COLUMN_GROUP_H
+#pragma once
 
 #include <cstdint>
 #include <filesystem>
@@ -155,5 +154,3 @@ class ColumnGroup {
 };
 
 }  // namespace silo::storage
-
-#endif  // SILO_COLUMN_GROUP_H
diff --git a/include/silo/storage/database_partition.h b/include/silo/storage/database_partition.h
index 676c973e2..d23214c8c 100644
--- a/include/silo/storage/database_partition.h
+++ b/include/silo/storage/database_partition.h
@@ -1,5 +1,4 @@
-#ifndef SILO_DATABASE_PARTITION_H
-#define SILO_DATABASE_PARTITION_H
+#pragma once
 
 #include <cstdint>
 #include <string>
@@ -88,5 +87,3 @@ class DatabasePartition {
 };
 
 }  // namespace silo
-
-#endif  // SILO_DATABASE_PARTITION_H
diff --git a/include/silo/storage/pango_lineage_alias.h b/include/silo/storage/pango_lineage_alias.h
index 4ad6a85df..af6643fd5 100644
--- a/include/silo/storage/pango_lineage_alias.h
+++ b/include/silo/storage/pango_lineage_alias.h
@@ -1,5 +1,4 @@
-#ifndef SILO_PANGO_LINEAGE_ALIAS_H
-#define SILO_PANGO_LINEAGE_ALIAS_H
+#pragma once
 
 #include <filesystem>
 #include <string>
@@ -48,5 +47,3 @@ class PangoLineageAliasLookup {
 };
 
 }  // namespace silo
-
-#endif  // SILO_PANGO_LINEAGE_ALIAS_H
diff --git a/include/silo/storage/reference_genomes.h b/include/silo/storage/reference_genomes.h
index 5ab9e1da9..c8ff8375b 100644
--- a/include/silo/storage/reference_genomes.h
+++ b/include/silo/storage/reference_genomes.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_STORAGE_REFERENCE_GENOME_H_
-#define SILO_INCLUDE_SILO_STORAGE_REFERENCE_GENOME_H_
+#pragma once
 
 #include <filesystem>
 #include <map>
@@ -30,5 +29,3 @@ struct ReferenceGenomes {
 };
 
 }  // namespace silo
-
-#endif  // SILO_INCLUDE_SILO_STORAGE_REFERENCE_GENOME_H_
diff --git a/include/silo/storage/sequence_store.h b/include/silo/storage/sequence_store.h
index 38d872b28..98795d63b 100644
--- a/include/silo/storage/sequence_store.h
+++ b/include/silo/storage/sequence_store.h
@@ -1,6 +1,4 @@
-
-#ifndef SILO_SEQUENCE_STORE_H
-#define SILO_SEQUENCE_STORE_H
+#pragma once
 
 #include <array>
 #include <cstddef>
@@ -123,5 +121,3 @@ struct [[maybe_unused]] fmt::formatter<silo::SequenceStoreInfo> : fmt::formatter
       format_context& ctx
    ) -> decltype(ctx.out());
 };
-
-#endif  // SILO_SEQUENCE_STORE_H
diff --git a/include/silo/storage/serialize_optional.h b/include/silo/storage/serialize_optional.h
index 31f0a3334..b8a91dbf1 100644
--- a/include/silo/storage/serialize_optional.h
+++ b/include/silo/storage/serialize_optional.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_STORAGE_SERIALIZE_OPTIONAL_H_
-#define SILO_INCLUDE_SILO_STORAGE_SERIALIZE_OPTIONAL_H_
+#pragma once
 
 #include <boost/serialization/item_version_type.hpp>
 #include <boost/serialization/library_version_type.hpp>
@@ -43,5 +42,3 @@ void serialize(Archive& archive, std::optional<T>& optional, const uint32_t vers
 }
 
 }  // namespace boost::serialization
-
-#endif  // SILO_INCLUDE_SILO_STORAGE_SERIALIZE_OPTIONAL_H_
diff --git a/include/silo_api/database_directory_watcher.h b/include/silo_api/database_directory_watcher.h
index 0ad8747bf..8f2b8abe4 100644
--- a/include/silo_api/database_directory_watcher.h
+++ b/include/silo_api/database_directory_watcher.h
@@ -1,5 +1,4 @@
-#ifndef SILO_DATABASE_DIRECTORY_WATCHER_H
-#define SILO_DATABASE_DIRECTORY_WATCHER_H
+#pragma once
 
 #include <string>
 
@@ -22,5 +21,3 @@ class DatabaseDirectoryWatcher {
    void checkDirectoryForData(Poco::Timer& timer);
 };
 }  // namespace silo_api
-
-#endif  // SILO_DATABASE_DIRECTORY_WATCHER_H
diff --git a/include/silo_api/database_mutex.h b/include/silo_api/database_mutex.h
index 0e744cc78..c6d9472a6 100644
--- a/include/silo_api/database_mutex.h
+++ b/include/silo_api/database_mutex.h
@@ -1,5 +1,4 @@
-#ifndef SILO_DATABASE_MUTEX_H
-#define SILO_DATABASE_MUTEX_H
+#pragma once
 
 #include <mutex>
 #include <shared_mutex>
@@ -29,5 +28,3 @@ class DatabaseMutex {
    virtual FixedDatabase getDatabase();
 };
 }  // namespace silo_api
-
-#endif  // SILO_DATABASE_MUTEX_H
diff --git a/include/silo_api/error_request_handler.h b/include/silo_api/error_request_handler.h
index 4c59be4c1..d68948ad3 100644
--- a/include/silo_api/error_request_handler.h
+++ b/include/silo_api/error_request_handler.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_API_ERRORREQUESTHANDLER_H_
-#define SILO_INCLUDE_SILO_API_ERRORREQUESTHANDLER_H_
+#pragma once
 
 #include <memory>
 #include <string>
@@ -30,5 +29,3 @@ class ErrorRequestHandler : public Poco::Net::HTTPRequestHandler {
 };
 
 };  // namespace silo_api
-
-#endif  // SILO_INCLUDE_SILO_API_ERRORREQUESTHANDLER_H_
diff --git a/include/silo_api/info_handler.h b/include/silo_api/info_handler.h
index 0e24937fd..32b6bd3cb 100644
--- a/include/silo_api/info_handler.h
+++ b/include/silo_api/info_handler.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INFOHANDLER_H
-#define SILO_INFOHANDLER_H
+#pragma once
 
 #include <Poco/Net/HTTPServerRequest.h>
 #include <Poco/Net/HTTPServerResponse.h>
@@ -20,5 +19,3 @@ class InfoHandler : public RestResource {
       override;
 };
 }  // namespace silo_api
-
-#endif  // SILO_INFOHANDLER_H
diff --git a/include/silo_api/logging.h b/include/silo_api/logging.h
index f7c1c5bb9..c8795ceb3 100644
--- a/include/silo_api/logging.h
+++ b/include/silo_api/logging.h
@@ -1,6 +1,3 @@
-#ifndef SILO_LOGGING_H
-#define SILO_LOGGING_H
+#pragma once
 
 void setupLogger();
-
-#endif  // SILO_LOGGING_H
diff --git a/include/silo_api/logging_request_handler.h b/include/silo_api/logging_request_handler.h
index 05b522320..dece757d6 100644
--- a/include/silo_api/logging_request_handler.h
+++ b/include/silo_api/logging_request_handler.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_API_LOGGING_REQUEST_HANDLER_H_
-#define SILO_INCLUDE_SILO_API_LOGGING_REQUEST_HANDLER_H_
+#pragma once
 
 #include <memory>
 
@@ -22,5 +21,3 @@ class LoggingRequestHandler : public Poco::Net::HTTPRequestHandler {
    ) override;
 };
 }  // namespace silo_api
-
-#endif  // SILO_INCLUDE_SILO_API_LOGGING_REQUEST_HANDLER_H_
diff --git a/include/silo_api/manual_poco_mocks.test.h b/include/silo_api/manual_poco_mocks.test.h
index dc476a04f..8c501079a 100644
--- a/include/silo_api/manual_poco_mocks.test.h
+++ b/include/silo_api/manual_poco_mocks.test.h
@@ -1,5 +1,4 @@
-#ifndef SILO_MANUAL_POCO_MOCKS_TEST_H
-#define SILO_MANUAL_POCO_MOCKS_TEST_H
+#pragma once
 
 #include <sstream>
 
@@ -54,5 +53,3 @@ class MockRequest : public Poco::Net::HTTPServerRequest {
 };
 
 }  // namespace silo_api::test
-
-#endif  // SILO_MANUAL_POCO_MOCKS_TEST_H
diff --git a/include/silo_api/not_found_handler.h b/include/silo_api/not_found_handler.h
index e9a9d4ca9..c501cf3a8 100644
--- a/include/silo_api/not_found_handler.h
+++ b/include/silo_api/not_found_handler.h
@@ -1,5 +1,4 @@
-#ifndef SILO_ERROR_H
-#define SILO_ERROR_H
+#pragma once
 
 #include <Poco/Net/HTTPRequestHandler.h>
 #include <Poco/Net/HTTPServerRequest.h>
@@ -16,5 +15,3 @@ class NotFoundHandler : public Poco::Net::HTTPRequestHandler {
 };
 
 }  // namespace silo_api
-
-#endif  // SILO_ERROR_H
diff --git a/include/silo_api/query_handler.h b/include/silo_api/query_handler.h
index a95e90949..5d4c2ca09 100644
--- a/include/silo_api/query_handler.h
+++ b/include/silo_api/query_handler.h
@@ -1,5 +1,4 @@
-#ifndef SILO_QUERYREQUESTHANDLER_H
-#define SILO_QUERYREQUESTHANDLER_H
+#pragma once
 
 #include <Poco/Net/HTTPServerRequest.h>
 #include <Poco/Net/HTTPServerResponse.h>
@@ -22,5 +21,3 @@ class QueryHandler : public RestResource {
       override;
 };
 }  // namespace silo_api
-
-#endif  // SILO_QUERYREQUESTHANDLER_H
diff --git a/include/silo_api/request_handler_factory.h b/include/silo_api/request_handler_factory.h
index 11a6882c8..29ce65916 100644
--- a/include/silo_api/request_handler_factory.h
+++ b/include/silo_api/request_handler_factory.h
@@ -1,5 +1,4 @@
-#ifndef SILO_REQUEST_HANDLER_FACTORY_H
-#define SILO_REQUEST_HANDLER_FACTORY_H
+#pragma once
 
 #include <Poco/Net/HTTPRequestHandler.h>
 #include <Poco/Net/HTTPRequestHandlerFactory.h>
@@ -25,5 +24,3 @@ class SiloRequestHandlerFactory : public Poco::Net::HTTPRequestHandlerFactory {
 };
 
 }  // namespace silo_api
-
-#endif  // SILO_REQUEST_HANDLER_FACTORY_H
diff --git a/include/silo_api/rest_resource.h b/include/silo_api/rest_resource.h
index 55d4a1fba..4359ff920 100644
--- a/include/silo_api/rest_resource.h
+++ b/include/silo_api/rest_resource.h
@@ -1,5 +1,4 @@
-#ifndef SILO_INCLUDE_SILO_API_REST_RESOURCE_H_
-#define SILO_INCLUDE_SILO_API_REST_RESOURCE_H_
+#pragma once
 
 #include <Poco/Net/HTTPRequestHandler.h>
 #include <Poco/Net/HTTPServerRequest.h>
@@ -25,5 +24,3 @@ class RestResource : public Poco::Net::HTTPRequestHandler {
 };
 
 };  // namespace silo_api
-
-#endif  // SILO_INCLUDE_SILO_API_REST_RESOURCE_H_
diff --git a/include/silo_api/runtime_config.h b/include/silo_api/runtime_config.h
index 2da9735cf..55fd7fa50 100644
--- a/include/silo_api/runtime_config.h
+++ b/include/silo_api/runtime_config.h
@@ -1,5 +1,4 @@
-#ifndef SILO_RUNTIME_CONFIG_H
-#define SILO_RUNTIME_CONFIG_H
+#pragma once
 
 #include <filesystem>
 #include <optional>
@@ -13,5 +12,3 @@ struct RuntimeConfig {
 };
 
 }  // namespace silo_api
-
-#endif  // SILO_RUNTIME_CONFIG_H
diff --git a/include/silo_api/variant_json_serializer.h b/include/silo_api/variant_json_serializer.h
index e1064086a..23171072f 100644
--- a/include/silo_api/variant_json_serializer.h
+++ b/include/silo_api/variant_json_serializer.h
@@ -1,5 +1,4 @@
-#ifndef SILO_VARIANT_JSON_SERIALIZER_H
-#define SILO_VARIANT_JSON_SERIALIZER_H
+#pragma once
 
 #include <nlohmann/json.hpp>
 #include <variant>
@@ -26,4 +25,3 @@ struct [[maybe_unused]] adl_serializer<std::variant<Ts...>> {
 };
 }  // namespace nlohmann
 // NOLINTEND
-#endif  // SILO_VARIANT_JSON_SERIALIZER_H