Tyrel Rink created ARROW-10989:
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Summary: [Rust] Use slices for iterating primitive arrays
Key: ARROW-10989
URL: https://issues.apache.org/jira/browse/ARROW-10989
Project: Apache Arrow
Issue Type: Improvement
Components: Rust
Reporter: Tyrel Rink
Iterating slices instead of indexes seems to improve performance of non-simd
arithmetic operations.
This adds a new method raw_values_slice to PrimitiveArray (so named to pun off
of the raw_values function which returns a pointer). A few of the functions in
PrimitiveArray rely on the caller for safety guarantees (bounds-checks for
value_slice, value), so should probably be unsafe? But they are used widely, so
I thought it simpler to start by adding a safer alternative...
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