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emma-k-alexandra/hooray.py

Created December 3, 2020 04:57
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reduce or comprehensions > map & filter
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hooray.py
l = [0, 1, 2, 3, 4, 5, 6]
# w/ map & filter
>>> list(map(lambda a: a * 2, filter(lambda a: a > 2, l)))
[6, 8, 10, 12]
# w/ generator
>>> list(a * 2 for a in l if a > 2)
[6, 8, 10, 12]
# w/ reduce
>>> reduce(lambda accumulator, a: accumulator + [a * 2] if a > 2 else accumulator, l, [])
[6, 8, 10, 12]
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