17 Aug 2009 17 Aug '09
Antoine Pitrou wrote:
Raymond Hettinger <python <at> rcn.com> writes:
IMO, its only virtue is that people coming from functional languages are used to having compose. Otherwise, it's a YAGNI.
Then I wonder how partial() ended up in the stdlib. It seems hardly more useful than compose().
I would certainly consider it more useful, but that aside, it's also a lot simpler to understand and use than the proposed compose() function. I think the main difference is that compose() requires functional/math skills to be used and read correctly (and might still be surprising in some corner cases), whereas partial() only requires you to understand how to set a function argument. Totally different level of mental complexity, IMHO.