[Python-Dev] What if replacing items in a dictionary returns the new dictionary? (original) (raw)
R. David Murray rdmurray at bitdance.com
Fri Apr 29 16:43:16 CEST 2011
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On Fri, 29 Apr 2011 10:27:46 -0400, Roy Hyunjin Han <starsareblueandfaraway at gmail.com> wrote:
It would be convenient if replacing items in a dictionary returns the new dictionary, in a manner analogous to str.replace(). What do you think?
This belongs on python-ideas, but the short answer is no. The general language design principle (as I understand it) is that mutable object do not return themselves upon mutation, while immutable objects do return the new object.
-- R. David Murray http://www.bitdance.com
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