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igor-shevchenko/reduce.py

Created August 30, 2013 07:30
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map and filter defined using reduce
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reduce.py
def map_(function, iterable):
return reduce(lambda lst, cur: lst + [function(cur)], iterable, [])
def filter_(function, iterable):
return reduce(lambda lst, cur: ((lst + cur) if type(iterable) is str else (lst + (cur,) if type(iterable) is tuple else lst + [cur])) if (function if function is not None else bool)(cur) else lst, iterable, '' if type(iterable) is str else tuple() if type(iterable) is tuple else [])
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