IG
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type Stream(T) interface {
...
Map(type V)(f func(T)V) Stream(V)
}func Map(type From, To)(s Stream(From), f func(From)To) Stream(To) {
}ВС
ВС
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ВС
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func Map(type From, To)(s Stream(From), f func(From)To) Stream(To) {
}с
C
с
с