>>>>> "PF" == Peter Funk <pf@artcom-gmbh.de> writes:
PF> Since [].pop() takes in optional index as parameter which
PF> defaults to the *LAST* element, it would be better to make the
PF> name explicit: .popfirstitem()
{}.pop() sounds like the right thing given its symmetry with [].pop().
It would have the semantics that it would remove and return a random
/item/ from the dictionary, which the implementation can make the
"first" item for convenience purposes.
It shouldn't dictate though, that {}.pop() == dict.items().pop() or
make any other guarantees about which item gets popped, because other
implementations (or indeed, other mapping-conformant objects) may use
different underlying representations that could make this inefficient.
For added symmetry, {}.pop() should take an optional argument which is
the key of the item to remove and return.
-Barry
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