[REBOL] Re: Multiple Word Conditional?
From: al:bri:xtra at: 19-Nov-2000 21:53
Chaz wrote:
> factorial: func [num][
> fact: func [n a][
> any [
> all [lesser? n 0 print "I don't know"]
> all [switch n [0 1 a]]
> all [fact subtract n 1 multiply n a]
> ]
> ]
> fact num 1
> ]
This can be better written as:
Factorial!: make object! [
Fact: func [n a] [
any [
all [lesser? n 0 print "I don't know"]
all [switch n [0 1 a]]
all [fact subtract n 1 multiply n a]
]
]
set 'Factorial func [num][
Fact Num 1
]
]
Note that Fact is only defined once, in the 'Factorial! object, rather than
every time 'Factorial is executed.
I hope that helps!
Andrew Martin
Objective Rebol...
ICQ: 26227169
http://members.nbci.com/AndrewMartin/
