Hello,
On Sat 04 Sep 2010 23:10, Ian Hulin <[email protected]> writes:
> If #:key is a superset of #:optional
#:key is not a superset of optional. Keyword parameters are bound by
name; optional parameters are bound by position. Keyword parameters are
not bound by position.
((lambda* (#:optional foo) foo) 10) => 10
((lambda* (#:key foo) foo) 10) => Error.
> If this is the case, could I request an enhancement for this the base
> code to declared using
> (define* (make-module #:key (size 31) (uses '()) (binder #f))
> ...)
Unfortunately we cannot, as this would be an incompatible change.
> If make-module is declared using #;key, how would this affect calling it
> from code with scm_call_1, scm_call_2, scm_call_3 or scm_call_n?
> SCM keyname = scm_str2symbol ("#;uses");
In modern Guile (>= 1.8), one makes a symbol from a string via
scm_from_locale_symbol. However in this case you want to make a keyword,
so use scm_from_locale_keyword ("uses").
(Actually, we should be using scm_from_latin1_keyword here, but that
doesn't exist yet.)
> SCM modlist = scm_list_2 (scm_str2sym("ice-9 syncase"),
> scm_str2sym("ice-9 debug"))
Neither of these modules are needed in current Guile. scm_str2sym is not
a part of Guile either; assuming it is one of your functions, you should
use your own namespace (ly_ for example), not Guile's (scm_).
> scm_call_2( SCM_VARIABLE_REF (scm_make_module_x), keyname, modlist):
Yes, you would call it like this.
Regards,
Andy
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