[REBOL] Re: How to check function arguments ?
From: greggirwin:mindspring at: 8-Jun-2002 13:26
Hi Jason,
<< It's kind of embarrassing, but I've forgotten the REBOL idioms for
something
really basic..
How to check for arguments provided to a function?
How to check when the argument is optional and when it is missing?
somefunc: func [arg1 arg2 ... argN] [
; check args here and respond
] >>
Do you mean refinements?
; arg-2 is an optional arg. flag-it is a refinment with no args.
somefunc: func [arg1 /has-arg-2 arg2 /flag-it] [
if has-arg-2 [
print arg-2
]
if flag-it [print "flagged"]
]
--Gregg
