[Python-Dev] Re: "groupby" iterator

Michael Hudson mwh at python.net
Wed Dec 3 05:39:05 EST 2003

Guido van Rossum <guido at python.org> writes:

>> Doesn't have to be a keyword... I implemented something like this
>> years ago and then ditched it when list comps appeared.
>> It would let you do things like
>> >>> map(X + 1, range(2))
>> [1, 2, 3]
> What was your notation like?  Did you actually use 'X'?

Um, I think so.  I defined it in my $PYTHONSTARTUP file as an instance
of a class _X, or something like that.


  In many ways, it's a dull language, borrowing solid old concepts
  from many other languages & styles:  boring syntax, unsurprising
  semantics, few  automatic coercions, etc etc.  But that's one of
  the things I like about it.                 -- Tim Peters, 16 Sep 93

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