arrow-core-data / arrow.core / MapK / foldLeft
fun <B> foldLeft(b: B, f: (B, A) -> B): B fun <B> foldLeft(b: MapK<K, B>, f: (MapK<K, B>, Tuple2<K, A>) -> MapK<K, B>): MapK<K, B>
fun <B> foldLeft(b: B, f: (B, A) -> B): B
fun <B> foldLeft(b:
MapK
<K, B>, f: (
<K, B>,
Tuple2
<K, A>) ->
<K, B>):
<K, B>
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