Derive default implementation for rpc Block (#471)

crates/rpc-types/src/eth/block.rs

@@ -16,7 +16,7 @@ use serde::{
 use std::{collections::BTreeMap, fmt, num::ParseIntError, ops::Deref, str::FromStr};
 
 /// Block representation
-#[derive(Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
+#[derive(Default, Debug, Clone, Eq, PartialEq, Serialize, Deserialize)]
 #[serde(rename_all = "camelCase")]
 pub struct Block {
     /// Header of the block.
@@ -52,7 +52,7 @@ impl Block {
 
 /// Block header representation.
 #[cfg_attr(any(test, feature = "arbitrary"), derive(arbitrary::Arbitrary))]
-#[derive(Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]
+#[derive(Default, Debug, Clone, PartialEq, Eq, Serialize, Deserialize, Hash)]
 #[serde(rename_all = "camelCase")]
 pub struct Header {
     /// Hash of the block
@@ -158,6 +158,12 @@ pub enum BlockTransactions<T = Transaction> {
     Uncle,
 }
 
+impl Default for BlockTransactions {
+    fn default() -> Self {
+        BlockTransactions::Hashes(Vec::default())
+    }
+}
+
 impl BlockTransactions {
     /// Converts `self` into `Hashes`.
     #[inline]