Lie Ryan <[email protected]> writes: > I guess in python, None as the missing datum idiom is still quite prevalent:
Well, sometimes there is no way around it, but:
> def cat_list(a=None, b=None):
> # poor man's list concatenation
> if a is None and b is None: return []
> if a is None: return b
> if b is None: return a
> return a + b
def cat_list(a=[], b=[]):
return a + b
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