Marko Rauhamaa writes:
> Chris Angelico wrote:
>
>> Okay. I'll put a slightly different position: Prove that your
>> proposal is worth discussing by actually giving us an example that we
>> can discuss.
>
> Sorry for missing most of the arguments here, but if you are talking
> about treating lists as special cases of dicts, I have occasionally
> instinctively wanted something like this:
>
> >>> fields = [ "x", "y", "z" ]
> >>> selector = (1, 1, 0)
> >>> list(map(fields.get, selector))
> Traceback (most recent call last):
> File "<stdin>", line 1, in <module>
> AttributeError: 'list' object has no attribute 'get'
operator.itemgetter(*selector)(fields) # ==> ('y', 'y', 'x')
> analogously with:
>
> >>> field_dict = { 0: "x", 1: "y", 2: "z" }
> >>> list(map(field_dict.get, selector))
> ['y', 'y', 'x']
operator.itemgetter(*selector)(field_dict) # ==> ('y', 'y', 'x')
It's not quite the same but it's close and it works the same for
strings, lists, dicts, ...
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