Leo Goodstadt <leo.goodstadt@human-anatomy.oxford.ac.uk> writes:
The zip iterator documentation says: "The zip iterator provides the ability to parallel-iterate over several controlled sequences simultaneously. ... Moving the zip iterator moves all the iterators in parallel."
What is not specified is what happens when the several different sequences are of unequal size. At the moment, everything just blows up.
python zip, if I remember correctly, just stops at the end of the shortest sequence in the tuple. (python map works differently). This seems a sensible thing to do.
Doesn't seem like such a great idea to me. It forces you to pay at each iteration of a loop when you could pay once to ensure that your ending zip iterator is formed from the correct position in each sequence. In my opinion the zip_iterator documentation should be improved (quite a lot) to make the requirements more explicit. -- Dave Abrahams Boost Consulting www.boost-consulting.com