Pre-allocate vector size (#1960)

ordinals · Oct 3, 2023 · be516f8 · be516f8
1 parent 560252f
commit be516f8
Showing 1 changed file with 2 additions and 2 deletions.
diff --git a/src/index.rs b/src/index.rs
@@ -579,12 +579,12 @@ impl Index {
 
   pub(crate) fn rare_sat_satpoints(&self) -> Result<Option<Vec<(Sat, SatPoint)>>> {
     if self.has_sat_index()? {
-      let mut result = Vec::new();
-
       let rtx = self.database.begin_read()?;
 
       let sat_to_satpoint = rtx.open_table(SAT_TO_SATPOINT)?;
 
+      let mut result = Vec::with_capacity(sat_to_satpoint.len()?.try_into().unwrap());
+
       for range in sat_to_satpoint.range(0..)? {
         let (sat, satpoint) = range?;
         result.push((Sat(sat.value()), Entry::load(*satpoint.value())));