On 05/08/2015 15:16, Paul Moore wrote:
On 5 August 2015 at 15:00, Sven R. Kunze <srkunze@mail.de> wrote:
60% of the thread are about the ominous * operator on lists. << Seriously? The thread started with a simple and useful idea; not with some rarely used feature. 35% of the thread are about some internal implementation issues. <<< Maybe not easy but I am certain you will sort that out. 5% about its usefulness and simplicity. <<< I stick to that.
There is no single iterator type that can have a "+" operator defined on it. If you pick one or more such types, other (possibly user defined) types will not work with "+" and this will confuse users.
itertools.chain is available to do this in an unambiguous and straightforward manner, its only downside (for some people) is that it's slightly more verbose.
Paul
c = itertools.chain should be short enough for those people. I've discarded ch as it's too often used as a character, and cn as it's likely to get confused with some type of connector. Me, I'll stick with the readable version. -- My fellow Pythonistas, ask not what our language can do for you, ask what you can do for our language. Mark Lawrence