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pre-allocate string for table writer #345

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merged 1 commit into from
Mar 5, 2024
Merged

pre-allocate string for table writer #345

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4 changes: 2 additions & 2 deletions dsc/src/tablewriter.rs
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Original file line number Diff line number Diff line change
Expand Up @@ -49,7 +49,7 @@ impl Table {
let (width, _) = size().unwrap_or((80, 25));
// make header bright green
println!("\x1b[1;32m");
let mut header_row = String::new();
let mut header_row = String::with_capacity(width as usize);
let last_column = self.header.len() - 1;
for (i, column) in self.header.iter().enumerate() {
header_row.push_str(&format!("{:<width$}", column, width = self.column_widths[i]));
Expand All @@ -67,7 +67,7 @@ impl Table {

// TODO: make this smarter by splitting long text to multiple lines
for row in &self.rows {
let mut row_str = String::new();
let mut row_str = String::with_capacity(header_row.len());
for (i, column) in row.iter().enumerate() {
row_str.push_str(&format!("{:<width$}", column, width = self.column_widths[i]));
if i != last_column {
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