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feat: optimize concat #218

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feat: optimize concat #218

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7 changes: 5 additions & 2 deletions cytoolz/itertoolz.pyx
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Original file line number Diff line number Diff line change
Expand Up @@ -692,6 +692,9 @@ cpdef object get(object ind, object seq, object default='__no__default__'):
return val


cdef object _chain_from_iterable = chain.from_iterable


cpdef object concat(object seqs):
"""
Concatenate zero or more iterables, any of which may be infinite.
Expand All @@ -708,7 +711,7 @@ cpdef object concat(object seqs):
See also:
itertools.chain.from_iterable equivalent
"""
return chain.from_iterable(seqs)
return _chain_from_iterable(seqs)


def concatv(*seqs):
Expand All @@ -721,7 +724,7 @@ def concatv(*seqs):
See also:
itertools.chain
"""
return chain.from_iterable(seqs)
return _chain_from_iterable(seqs)


cpdef object mapcat(object func, object seqs):
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