viirya commented on a change in pull request #1296:
URL: https://github.com/apache/arrow-rs/pull/1296#discussion_r803417701
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File path: arrow/src/array/iterator.rs
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@@ -403,6 +403,109 @@ impl<'a, S: OffsetSizeTrait> std::iter::ExactSizeIterator
{
}
+/// an iterator that returns Some(T) or None, that can be used on any
DictionaryArray
+// Note: This implementation is based on std's [Vec]s' [IntoIter].
+#[derive(Debug)]
+pub struct DictionaryIter<'a, K: ArrowPrimitiveType, T: ArrowPrimitiveType> {
+ array: &'a DictionaryArray<K>,
+ values: &'a PrimitiveArray<T>,
+ current: usize,
+ current_end: usize,
+}
Review comment:
We may add iterators for others, e.g. Utf8, binary..., if this direction
is correct.
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