On Tue, May 01, 2018 at 06:06:06PM +1200, Greg Ewing wrote: > Steven D'Aprano wrote: > >Pascal, for example, had lexical scoping back in the 1970s, but > >no closures. > > Well, it kind of had a limited form of closure. You could pass > a procedure or function *in* to another procedure or function > as a parameter, but there was no way to return one or pass it > out in any way. This ensured that the passed-in procedure or > function couldn't outlive its lexical environment.
So what was the closure? If the surrounding function was still running, there was no need to capture the running environment in a closure? Not a rhetorical question, I'm genuinely unsure. -- 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/
