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Re: Generator Examples
From: |
T.V Raman |
Subject: |
Re: Generator Examples |
Date: |
Sat, 24 Sep 2016 19:26:35 -0700 |
The bit you wrote in response to my "dont understand why nested
iter-yield" might do well in the manual. Also, it might do what it
claims, but why it does it is opaque -- and examples that do something
useful are usually easier to learn from.
Michael Heerdegen writes:
> raman <address@hidden> writes:
>
> > The cl-psetq is the right idiom here in that sense -- if you use plain
> > setq, you'd have to use a temporary variable?
>
> Sure, but I want to avoid to confront people with functions they
> potentially don't know in these examples, so that they can concentrate
> on the gist. A minor issue, sure.
>
> > Thanks for the coroutine example, again that would do well in the
> > manual -- there is a reference to coroutines either in the manual or
> > in code comments in generators.el that is presently "intriguing".
>
> AFAIK the original author wanted to add some code for working with
> coroutines.
>
> > Finally, I still dont understand the nested call to iter-yield in the
> > manual and if it is correct, it would be good to have it better
> > explained there.
>
> I think it is correct (behaves exactly as described, and the behavior is
> what I expect). What in particular don't you understand?
>
> I think the thing that this part wants to demonstrate is that
> `iter-yield' behaves normally wrt when it is evaluated (function
> arguments before function calls etc.; so the inner `iter-yield' is
> called first, and the outer not before the iterator has been restarted).
> And the outer `iter-yield' yields a value that is computed from the
> "return value" of the inner, which is the second argument of the
> according `iter-next' call.
>
>
> Michael.
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