perf[rust]: use vec![value;n] for ChunkedArray::full (#4435)

pola-rs · Aug 16, 2022 · 81693c6 · 81693c6
1 parent 6f78893
commit 81693c6
Showing 1 changed file with 2 additions and 7 deletions.
diff --git a/polars/polars-core/src/chunked_array/ops/full.rs b/polars/polars-core/src/chunked_array/ops/full.rs
@@ -3,19 +3,14 @@ use polars_arrow::array::default_arrays::FromData;
 
 use crate::chunked_array::builder::get_list_builder;
 use crate::prelude::*;
-use crate::utils::NoNull;
 
 impl<T> ChunkFull<T::Native> for ChunkedArray<T>
 where
     T: PolarsNumericType,
 {
     fn full(name: &str, value: T::Native, length: usize) -> Self {
-        let mut ca = (0..length)
-            .map(|_| value)
-            .collect::<NoNull<ChunkedArray<T>>>()
-            .into_inner();
-        ca.rename(name);
-        ca
+        let data = vec![value; length];
+        ChunkedArray::from_vec(name, data)
     }
 }