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Re: passing flags to a function

From: Kevin Ryde
Subject: Re: passing flags to a function
Date: Wed, 03 May 2006 11:43:20 +1000
User-agent: Gnus/5.110004 (No Gnus v0.4) Emacs/21.4 (gnu/linux)

Dan McMahill <address@hidden> writes:
> SCM scm_myfn(SCM flags)
> {
>   myfn (scm_num2int (flags, SCM_ARG1, "myfn"));

Various things in the guile core are done like that, stuff like O_RDWR
for `open'.  The list of symbols Ludovic described is done in the
guile-gtk interface and works nicely too.

If you're entirely in scheme then the ice-9 optargs module to take
keywords is good, especially if you want actual values, not just
yes/no flags.

        (foo #:error-check #t
             #:verbose #f

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