Dandandan commented on code in PR #9229:
URL: https://github.com/apache/arrow-rs/pull/9229#discussion_r2708505356
##########
arrow-select/src/filter.rs:
##########
@@ -91,6 +91,24 @@ impl<'a> IndexIterator<'a> {
let iter = filter.values().set_indices();
Self { remaining, iter }
}
+
+ /// Collect this iterator as a [`Vec`]
+ pub fn collect(mut self) -> Vec<usize> {
+ let len = self.remaining;
+ let mut result = Vec::with_capacity(len);
+ let ptr: *mut usize = result.as_mut_ptr();
+ for i in 0..len {
+ // SAFETY: we have allocated enough space in `result`
Review Comment:
Done!
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