[REBOL] Re: is there a better way?
From: ingo:2b1 at: 5-May-2001 22:02
Hi Rishi,
Once upon a time Rishi Oswal spoketh thus:
> wondering if there is a better way to do the following
> lines of code (rather than using so many if
> statements)
>
> menu-choice: choice 150 "Menu1" "Menu2" "Menu3" [
> if ((first value) = "Menu1")
> [menu-panel/pane: menu1 show menu-panel]
> if ((first value) = "Menu2")
> [menu-panel/pane: menu2 show menu-panel]
> if ((first value) = "Menu3")
> [menu-panel/pane: menu3 show menu-panel]
> ]
You could use switch instead:
switch first value [
"Menu1" [menu-panel/pane: menu1 show menu-panel]
"Menu2" [menu-panel/pane: menu2 show menu-panel]
"Menu3" [menu-panel/pane: menu3 show menu-panel]
]
> menu-choice 150 "Menu1" "Menu2" "Menu3" [
> [menu-panel/pane: to-word first value
> show menu-panel]
> ]
The problem is, you set the pane _to the word_ menuX,
but really want to set it to the value this word is
pointing to:
menu-choice 150 "Menu1" "Menu2" "Menu3" [
[menu-panel/pane: get to-word first value
; === get the value
show menu-panel]
]
I'm not sure, but maybe the following works, too:
menu-choice 150 "Menu1" "Menu2" "Menu3" [
[menu-panel/pane: to-get-word first value
; =========== get the value
show menu-panel]
]
I hope that helps,
Ingo
