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* How do I pass a variable defined in a wrapping let, to a lambda?
@ 2022-03-11 22:44 Steinar Bang
  2022-03-11 23:04 ` Eric Abrahamsen
                   ` (2 more replies)
  0 siblings, 3 replies; 48+ messages in thread
From: Steinar Bang @ 2022-03-11 22:44 UTC (permalink / raw)
  To: help-gnu-emacs

I have been trying to write a restclient.el[1] result function that can be
used to save the body of a GET result to a file[2].

My first attempt didn't work[3].

I tried to look at an existing result function that actually worked[4],
and I finally figured it out: the final form of that function is a
lambda!

So it was probably that lambda that was run to create the result?

I rewrote my example code to this[5].

But it still didn't work.  And the reason it didn't work is that
filename didn't have a value set.

If I replace the filename variable with a text constant[6], then the
function works.

But as far as I can tell, the function in[4] uses variables defined in
the wrapping (let) in the lambda...?

So why is that working but my filename failing?

Thanks!


- Steinar

References:
[1] <https://github.com/pashky/restclient.el>
[2] <https://github.com/pashky/restclient.el/issues/275>
[3] <https://github.com/pashky/restclient.el/issues/275#issuecomment-1047537935>
[4] <https://github.com/pashky/restclient.el/blob/9e2cfa86529133eba6c9ef53794be182f15e4c21/restclient-jq.el#L49>
[5] <https://gist.github.com/steinarb/fe442b78fda5d70a2733785c8c50e976>
[6] <https://gist.github.com/steinarb/61ccca486827f84a08cbc3f414cfda27>



^ permalink raw reply	[flat|nested] 48+ messages in thread

end of thread, other threads:[~2022-03-16  0:25 UTC | newest]

Thread overview: 48+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2022-03-11 22:44 How do I pass a variable defined in a wrapping let, to a lambda? Steinar Bang
2022-03-11 23:04 ` Eric Abrahamsen
2022-03-12  4:52   ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-03-12  6:08     ` Eduardo Ochs
2022-03-12 13:33       ` Stefan Monnier
2022-03-12 18:56         ` Eduardo Ochs
2022-03-12 19:12           ` Stefan Monnier
2022-03-12 20:17             ` Eduardo Ochs
2022-03-12 20:31               ` [External] : " Drew Adams
2022-03-12 22:33                 ` Eduardo Ochs
2022-03-12 23:14                   ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-03-13 12:19                     ` Eduardo Ochs
2022-03-13 23:46                       ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-03-13  0:20                   ` Michael Heerdegen
2022-03-12 20:34           ` tomas
2022-03-12  8:53     ` Steinar Bang
2022-03-12 14:47       ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-03-12 16:59         ` Steinar Bang
2022-03-12 17:15           ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-13 18:11             ` Steinar Bang
2022-03-12 19:09           ` Stefan Monnier via Users list for the GNU Emacs text editor
2022-03-12 20:57             ` Steinar Bang
2022-03-12  8:51   ` Steinar Bang
2022-03-12  9:34     ` Steinar Bang
2022-03-12 19:13       ` Steinar Bang
2022-03-12 14:03     ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-13 16:06       ` Eric Abrahamsen
2022-03-13 18:20         ` Steinar Bang
2022-03-11 23:48 ` Eric Abrahamsen
2022-03-12  0:43   ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-12  0:52     ` Eric Abrahamsen
2022-03-12  1:00       ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-12  0:58     ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-12  1:37   ` Michael Heerdegen
2022-03-12  2:18     ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-12  6:40       ` Jean Louis
2022-03-14 13:57         ` `let' vs `let*' (was: Re: How do I pass a variable defined in a wrapping let, to a lambda?) Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-15  7:36           ` Jean Louis
2022-03-15  8:30             ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-15 15:26           ` [External] : " Drew Adams
2022-03-15 15:41             ` tomas
2022-03-15 22:40               ` [External] : `let' vs `let*' Stefan Monnier via Users list for the GNU Emacs text editor
2022-03-16  0:25               ` [External] : `let' vs `let*' (was: Re: How do I pass a variable defined in a wrapping let, to a lambda?) Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-15 17:16             ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-14 14:51         ` How do I pass a variable defined in a wrapping let, to a lambda? Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-12  2:19     ` Eric Abrahamsen
2022-03-11 23:58 ` Emanuel Berg via Users list for the GNU Emacs text editor
2022-03-12  0:47   ` Emanuel Berg via Users list for the GNU Emacs text editor

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