[Python-ideas] Add orderedset as set(iterable, *, ordered=False) and similarly for frozenset. (original) (raw)
Ed Kellett edk141 at gmail.com
Sun Feb 8 00:24:09 CET 2015
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On Sat Feb 07 2015 at 11:12:02 PM Neil Girdhar <mistersheik at gmail.com> wrote:
Why shouldn't that be the same as a | b | c | d ? I think it should and that in general union should be equivalent in effect to copy and extend.
Because yielding an ordering doesn't have any basis in the definition of union, and it's not any easier to write than a + b + c + d. "copy and extend" is just concatenation - is there any reason not to use the concatenation operator for it, rather than the union?
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