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Create fastfilter() stream method. #6

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asuiu opened this issue Feb 14, 2018 · 1 comment

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asuiu commented Feb 14, 2018

Use already implemented fastmap()

asuiu added the enhancement label

asuiu self-assigned this

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asuiu commented Jun 27, 2020

As a simpler implementation, it can use fastmap behind, in this way:

def fastmap(self, f:Callable)
    return (self.fastmap(lambda _: (_, f(_)) )
        .filter(itemgetter(1))
        .map(itemgetter(0)
        )

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