[REBOL] Re: Switch with refinements/hmmm!
From: joel:neely:fedex at: 31-Oct-2001 17:10
Hi, Tim,
Tim Johnson wrote:
> refine-switch: func[ /ref-one /ref-two /ref-three][
> switch <duh>what would I put her</duh>[ ; needs a value
> ref-one[print "ref-one"]
> ref-two[print "ref-two"]
> ref-three[print "ref-three"]
> ]
> ]
>
If you expect at most one refinement to be used
refine-switch: func [ /refa /refb /refc ] [
either refa [
print "ref A"
][either refb [
print "ref B"
][either refc [
print "ref C"
][
print "NO ref"
]]]
]
If more than one can be present (which, of course, REBOL syntax
allows to occur)
refine-switch: func [/refa /refb /refc][
either any [refa refb refc] [
if refa [print "ref A"]
if refb [print "ref B"]
if refc [print "ref C"]
][
print "NO ref"
]
exit
]
(or several variations!)
I know I didn't answer exactly the way the question was worded,
but I'm not sure that SWITCH is the most obvious solution.
Sterling's reply was ingeneous (and I've certainly done such
things myself ;-) but it's not likely to be immediately clear to
the casual reader what's going on .
HTH!
-jn-
--
This sentence contradicts itself -- no actually it doesn't.
-- Doug Hofstadter
joel<dot>neely<at>fedex<dot>com
