tree f79d905e5ee1e6e748100eb4b2601bf17b40d384
parent b43f26c386b190147159f5bc6fdead006d7bd77c
author Jacob MacDonald <jakemac@google.com> 1565971635 -0700
committer GitHub <noreply@github.com> 1565971635 -0700
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CombinedMapView.keys fix (#110)

Fixes https://github.com/dart-lang/collection/issues/109

Adds a custom iterable/iterator that can filter out duplicates and use that for the `CombineMapView.keys` getter. 

Updates tests to contain duplicates in maps, and ensure the keys/values from the earlier maps are the ones that are returned.

Updates the changelog and docs to no longer claim `O(maps)` for the length getter. This now requires iteration of all items and is `O(total map entries)`.

Prepare to publish as 1.14.12