< kef> `a groupingBy it first fold 0 acc pair gt acc + pair kotlinlang #getting-started

<@U9457JHS8> `a.groupingBy { it.first }.fold(0) { ...

ilya.gorbunov

02/05/2018, 8:22 PM

@kef

a.groupingBy { it.first }.fold(0) { acc, pair -> acc + pair.second }.toList()

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