fix(toMap): fix return type of keySelector #365
Merged
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change return type of keySelector from TElement to TKey, since keySelector returns keys, not elements
Closes: #364
Description:
change return type of keySelector to TKey. This might be a breaking change for existing code in rare cases. But then the programmer would very likely have worked around the bug this PR fixes. Feedback welcome.
Related issue (if exists):
#364