refactor: Use `Vec::clear` instead of `Vec::truncate(0)`

benches/encoders.rs

@@ -75,7 +75,7 @@ fn benchmark_decode<T>(
             |b, &decoded_len| {
                 let mut decoded_mut = Vec::with_capacity(decoded_len);
                 b.iter(|| {
-                    decoded_mut.truncate(0);
+                    decoded_mut.clear();
                     decode(&encoded, &mut decoded_mut).unwrap();
                 });
             },

delorean_tsm/src/encoders/float.rs

@@ -21,7 +21,7 @@ fn is_sentinel_u64(v: u64, sentinel: u64) -> bool {
 /// representations based on those are stored.
 #[allow(clippy::many_single_char_names)]
 pub fn encode(src: &[f64], dst: &mut Vec<u8>) -> Result<(), Box<dyn Error>> {
-    dst.truncate(0); // reset buffer.
+    dst.clear(); // reset buffer.
     if src.is_empty() {
         return Ok(());
     }

delorean_tsm/src/encoders/integer.rs

@@ -16,7 +16,7 @@ enum Encoding {
 /// further compressed if possible, either via bit-packing using simple8b or by
 /// run-length encoding the deltas if they're all the same.
 pub fn encode(src: &[i64], dst: &mut Vec<u8>) -> Result<(), Box<dyn Error>> {
-    dst.truncate(0); // reset buffer.
+    dst.clear(); // reset buffer.
     if src.is_empty() {
         return Ok(());
     }

delorean_tsm/src/encoders/string.rs

@@ -12,7 +12,7 @@ const MAX_I32: usize = i32::MAX as usize;
 /// Encodes a slice of byte slices representing string data into a vector of bytes. Currently uses
 /// Snappy compression.
 pub fn encode(src: &[&[u8]], dst: &mut Vec<u8>) -> Result<(), Box<dyn Error>> {
-    dst.truncate(0); // reset buffer
+    dst.clear(); // reset buffer
     if src.is_empty() {
         return Ok(());
     }

delorean_tsm/src/encoders/timestamp.rs

@@ -17,7 +17,7 @@ enum Encoding {
 /// encoded using RLE. If not, as long as the deltas are not bigger than simple8b::MAX_VALUE
 /// they can be encoded using simple8b.
 pub fn encode(src: &[i64], dst: &mut Vec<u8>) -> Result<(), Box<dyn Error>> {
-    dst.truncate(0); // reset buffer.
+    dst.clear(); // reset buffer.
     if src.is_empty() {
         return Ok(());
     }