Core: Reimplement CharSequenceMap to obey Map contract #11308
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The previous
CharSequenceMap
implementation did not follow generalMap
contract. For example,Map.keySet()
should be a live view of the keys in the map, but it was a copy. This commit reimplements the class so that it obeys the map contract, while maintaining the fundamental objective of the class, which is to compareCharSequence
keys by the value of char sequences they describe.