Re: Pass argument to function

[ipcore]

You actually don't even need string-append here. The following should 
also work:


(capture (docker inspect ,str))

Best wishes,
-utz

Re: Pass argument to function

[Brandon Booth]

Unquoting worked! I spent so much time trying different variations and this 
worked:

(capture ,(string-append "docker inspect " str)))

Thanks.

Brandon

Re: Pass argument to function

[Nevroz Arslan]

You're right. I confused characters , with ` during typing in the editor.
Sorry for misunderstanding at my part.

Am Fr., 10. März 2023 um 20:36 Uhr schrieb :

> >
> >> (capture ,(string-append "docker inspect " str)))
> > doesn't work because of the same reason that you expressed.
> > You would get "quasiquote not found" from the shell.
>
> Yes, it does, and no, you don't get "quasiquote not found" from this.
>

Re: Pass argument to function

[Mario Domenech Goulart]

On Fri, 10 Mar 2023 20:15:13 +0300 Nevroz Arslan  wrote:

>> (capture ,(string-append "docker inspect " str))) 
> doesn't work because of the same reason that you expressed. 
> You would get "quasiquote not found" from the shell.

Actually, no:

  $ csi -R shell -p '(capture ,(string-append "echo" " foo"))'
  foo

All the best.
Mario
-- 
http://parenteses.org/mario

Re: Pass argument to function

[ipcore]

(capture ,(string-append "docker inspect " str)))

doesn't work because of the same reason that you expressed.
You would get "quasiquote not found" from the shell.


Yes, it does, and no, you don't get "quasiquote not found" from this.

Re: Pass argument to function

[Nevroz Arslan]

Hi utz and Brandon,

> (capture ,(string-append "docker inspect " str)))
doesn't work because of the same reason that you expressed.
You would get "quasiquote not found" from the shell.

As a workaround, execute procedure might be used straightly.
(define (inspect str)
  (execute (list (string-append "docker inspect " str)) 'verbose: #t ))

Cheers,

Am Fr., 10. März 2023 um 19:22 Uhr schrieb :

> Hi Brandon,
>
> 'capture' and its friends 'run' and 'run*' are macros that treat their
> arguments differently from what you would expect from a regular procedure.
>
> Looking at the documentation of '(run COMMAND ...)', you will find that
>
> >  COMMAND is also implicitly quasiquoted so subexpressions may be
> computed at run-time by unquoting them.
>
> which means that COMMAND is passed to the shell as-is, without being
> evaluated. So the "not found" error is actually returned by the shell,
> since it does not know what 'string-append' is.
>
> In order to evaluate a quasi-quoted expression (or parts of it), you
> must unquote it (or the parts in question).
> This should work:
>
> (capture ,(string-append "docker inspect " str)))
>
> Hope that helps.
>
> Best wishes,
> -utz
>
>

Re: Pass argument to function

[ipcore]

Hi Brandon,

'capture' and its friends 'run' and 'run*' are macros that treat their 
arguments differently from what you would expect from a regular procedure.


Looking at the documentation of '(run COMMAND ...)', you will find that


 COMMAND is also implicitly quasiquoted so subexpressions may be computed at 
run-time by unquoting them.


which means that COMMAND is passed to the shell as-is, without being 
evaluated. So the "not found" error is actually returned by the shell, 
since it does not know what 'string-append' is.


In order to evaluate a quasi-quoted expression (or parts of it), you 
must unquote it (or the parts in question).

This should work:

(capture ,(string-append "docker inspect " str)))

Hope that helps.

Best wishes,
-utz

Re: Pass argument to function

[Kristian Lein-Mathisen]

Hi Brandon,

What you are doing looks right to me. What exactly is the error message?

"string-append" is automaticalli imported, so it should be available
without any imports. Perhaps you redifined "string-append" elsewhere in
your code? If not, there may me a problem with your CHICKEN installation.

~> rlwrap csi
#;1> (list "a" "b")
("a" "b")
#;2> (list "a" (string-append "b" "c"))
("a" "bc")


K.

On Fri, Mar 10, 2023, 15:15 Brandon Booth  wrote:

> I'm trying to learn Chicken and having issues. I'm trying to create a
> function that takes a docker container name and runs "docker inspect
> [container]."
>
> This works:
> (define test (capture "docker inspect hello-world"))
>
> This works:
> (define (str-concat str)
> (string-append "docker inspect " str))
>
> This doesn't:
> (define (inspect str)
> (capture (string-append "docker inspect " str)))
>
> I get an error that string-append is not found. How do a call capture with
> the result of string-append?
>
> Thanks.
>
> Brandon
>
>
>

Pass argument to function

[Brandon Booth]

I'm trying to learn Chicken and having issues. I'm trying to create a function 
that takes a docker container name and runs "docker inspect [container]."

This works:
(define test (capture "docker inspect hello-world"))

This works:
(define (str-concat str)
(string-append "docker inspect " str))

This doesn't:
(define (inspect str)
(capture (string-append "docker inspect " str)))

I get an error that string-append is not found. How do a call capture with the 
result of string-append?

Thanks.

Brandon