heyrutvik commented on code in PR #2038:
URL: https://github.com/apache/arrow-rs/pull/2038#discussion_r917722402
##########
arrow/src/array/array_boolean.rs:
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@@ -222,38 +222,7 @@ impl<'a> BooleanArray {
impl<Ptr: Borrow<Option<bool>>> FromIterator<Ptr> for BooleanArray {
fn from_iter<I: IntoIterator<Item = Ptr>>(iter: I) -> Self {
- let iter = iter.into_iter();
- let (_, data_len) = iter.size_hint();
- let data_len = data_len.expect("Iterator must be sized"); // panic if
no upper bound.
Review Comment:
@tustvold I noticed some implementations panic if the upper size hint is not
available and others pick whatever is available. Is this a deliberate decision?
AFAIK we use size hint for slight optimization and it should not be enforced
such a way. Thoughts?
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