On Sun, Oct 23, 2016 at 12:57:10PM -0200, Danilo J. S. Bellini wrote: > The idea is to let generator expressions and list/set comprehensions have a > clean syntax to access its last output. That would allow them to be an > alternative syntax to the scan higher-order function [1] (today implemented > in the itertools.accumulate function), which leads to an alternative way to > write a fold/reduce. It would be nice to have something like:
[cut suggested syntax] > instead of a reduce: [cut four existing ways to solve the problem] Why do we need a FIFTH way to solve this problem? What you are describing is *exactly* the use case for a reduce or fold function. Why add special magic syntax to make comprehensions do even more? Not everything needs to be a one liner. It's okay to import reduce to do a reduce. Its okay to write an actual for-loop. > Actually, I already wrote a solution for something similar to that: > PyScanPrev [2]. Ah, that makes SIX existing solutions. Do we need a seventh? -- Steve _______________________________________________ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: http://python.org/psf/codeofconduct/
