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mcupak/collect-with-grouping-by-mapping-to-set.out

Created November 10, 2017 01:38
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collect-with-grouping-by-mapping-to-set.out
jshell> entries.collect(Collectors.groupingBy(e -> e.getKey(), Collectors.mapping(e -> e.getValue(), Collectors.toSet())))
$1 ==> {1=[[b, a], [c, a]], 2=[[d]]}
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