mapMultiMapKeys - apply function to a MultiMap's keys, merge values if two keys collapse to one [1024745]

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JavaX fragment (include) [tags: use-pretranspiled]

Transpiled version (5520L) is out of date.

static <A, B, C> MultiMap<B, C> lambdaMapLike mapMultiMapKeys(IF1<A, C> f, MultiMap<A, B> mm) {
  MultiMap m = similarEmptyMultiMap(mm);
  for (key : keys(mm))
    m.put(f.get(key), mm.get(key));
  ret m;
}

static <A, B, C> MultiMap<B, C> lambdaMapLike mapMultiMapKeys(MultiMap<A, B> mm, IF1<A, C> f) {
  ret mapMultiMapKeys(f, mm);
}

Author comment

Began life as a copy of #1020213

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Snippet ID:	#1024745
Snippet name:	mapMultiMapKeys - apply function to a MultiMap's keys, merge values if two keys collapse to one
Eternal ID of this version:	#1024745/8
Text MD5:	9e8255755f9685f9384f94c8e536eaa8
Author:	stefan
Category:	javax
Type:	JavaX fragment (include)
Public (visible to everyone):	Yes
Archived (hidden from active list):	No
Created/modified:	2022-03-11 06:19:37
Source code size:	344 bytes / 10 lines
Pitched / IR pitched:	No / No
Views / Downloads:	244 / 359
Version history:	7 change(s)
Referenced in:	#1006654 - Standard functions list 2 (LIVE, continuation of #761) #1034849 - mapMultiSetMapKeys - apply function to a MultiSetMap's keys, merge values if two keys collapse to one