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amaembo / streamex

Enhancing Java Stream API
Apache License 2.0
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Add toMapKey() #248

Closed stickfigure closed 2 years ago

stickfigure commented 3 years ago

Adds toMapKey(), toSortedMapKey(), toNavigableMapKey().

Convenience methods to avoid passing Function.identity() everywhere.

Addresses #238. Similar to PR #239 but with minimum code changes.