[REBOL] Re: newbie question
From: nitsch-lists:netcologne at: 27-Feb-2004 18:12
Am Freitag, 27. Februar 2004 17:28 schrieben Sie:
> ok, it appears that 'any' or 'some' will traverse the entire input like I
> need. Not that I understand it fully but at least it appears to work.
>
Yes, its like a loop. the difference is how the part after the loop is
handled.
'any -> 0-n matches, 'some -> 1-n matches.
parse string[ "start" any ["middle"] "end" ]
>> parse "start middle end"[ "start" any ["middle"] "end" ]
== true
>> parse "start end"[ "start" any ["middle"] "end" ]
== true
>> parse "start middle end"[ "start" some ["middle"] "end" ]
== true
>> parse "start end"[ "start" some ["middle"] "end" ]
== false
-Volker
