[Python-ideas] A Continuations Compromise in Python

[John Graham]

On Tue, May 5, 2009 at 10:31 PM, Jim Jewett <jimjjewett at gmail.com> wrote:
> On 5/5/09, spir <denis.spir at free.fr> wrote:
>> Le Tue, 5 May 2009 07:29:22 -0500,
>> John Graham <john.a.graham at gmail.com> s'exprima ainsi:
>
>>> I had another proposal on the actual keyword front,
>>> "return from", which looks like it would kind of provide some symmetry
>>> to the 'return' and 'yield' constructs and also reads pretty
>>> intuitively, in my opinion.
>
>> Sounds good imo.
>> return --> the process does not go farther in the curent func
>> from   --> there a detour
>
> Starting with a clean slate, I would agree.
>
> In practice, "return from" may already have too strong an association
> with its use in lisp-like languages.  The real meaning here is closer
> to GOTO; I would expect a "return from" to pop several layers from the
> stack (rather that simply replacing the current one).
>
> -jJ
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Embrace, extend, destroy.  It's not enough we take tail calls from the
schemers, we'll teach a new generation of kids to think Lisp is even
weirder than it is by reusing their terms! :)