Re: [Python-ideas] Modern language design survey for "assign and compare" statements

> > print(child_pid) # child_pid is undefined > > Why on earth would it be undefined? > Indeed, users would expect the new uses of "as" to behave as the previous ones. The problem is that "with" and "except" do things differently: In [*1*]: *import* *os* In [*2*]: *with*

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

[Tim, on Rebol/Red] >> >> x: 12 y: 13 >> == 13 >> >> [x y] >> == [x y] >> >> >> >> do [x y] >> == 13 [Greg Ewing ] > How does scoping work? If you pass a block to a function > which evaluates it, how are names in the block resolved? Too involved, but basically a form

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

On Sun, May 20, 2018 at 10:57:39AM -0700, Mike Miller wrote: > You seem determined to throw out requirements when it suits. One of which > was for newer languages. YOU are the one who changed the requirements: first you said "newer languages", then you changed it to industry standard. I

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

On Sun, May 20, 2018 at 02:53:46PM -0400, Juancarlo Añez wrote: > This shouldn't be: > > if os.fork() as child_pid: > parent(child_pid) > else: >child() > > print(child_pid) # child_pid is undefined Why on earth would it be undefined? Anyway, if you want to propose an alternative to

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

Tim Peters wrote: x: 12 y: 13 == 13 [x y] == [x y] do [x y] == 13 How does scoping work? If you pass a block to a function which evaluates it, how are names in the block resolved? -- Greg ___ Python-ideas mailing list Python-ideas@python.org

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

[Tim] >> I was an early REBOL user, and my head still hurts ;-) It was ... >> different, for sure. [Steven D'Aprano ] > Yeah, to me it looks more like a prefix version of Forth than Lisp. > Complete with "anything can be a name": The example I gave just strung "words"

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

Anyone can trivially construct a scope that limits applicable cases to support a specific point. This thread is pointless without full context. On Sun, May 20, 2018, 11:05 Mike Miller wrote: > For more background, this is the thread that inspired this one: > >

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

> What would be the benefit of adding the "as child_pid" syntax? The > full assignment expression syntax completely covers all the jobs that > you can do with a capturing if statement. > > The "as" syntax over "if" and "while" may go in with all the restrictions and caveats already discussed. The

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

For more background, this is the thread that inspired this one: https://mail.python.org/pipermail/python-dev/2018-April/153071.html -Mike ___ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

You seem determined to throw out requirements when it suits. One of which was for newer languages. While this thread's original post was not so specific on that, in a previous post (I believe you read) defined that as created in the "last decade or so". The ones created to address

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

On Mon, May 21, 2018 at 1:19 AM, Juancarlo Añez wrote: > IMPORTANT NOTE: > > Enabling "as" in "if" and "while" doesn't have to be at the expense of some > form of assignment expression. We've been having this discussion as if has > to be either one or the other, and there's no

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

On Sun, May 20, 2018 at 1:35 AM, Steven D'Aprano wrote: > > but maybe when languages are weird enough they all look the same :-) > > https://www.dreamsongs.com/WorseIsBetter.html Look at what happened with PERL... IMPORTANT NOTE: Enabling "as" in "if" and "while"

Re: [Python-ideas] Modern language design survey for "assign and compare" statements

Steven D'Aprano wrote: Yeah, to me it looks more like a prefix version of Forth than Lisp. Throf? -- Greg ___ Python-ideas mailing list Python-ideas@python.org https://mail.python.org/mailman/listinfo/python-ideas Code of Conduct: