[REBOL] Re: Constant size string variable?
From: ingo:2b1 at: 2-Dec-2001 12:01
Hi Bob,
Once upon a time Bob Paddock spoketh thus:
<..>
> I need a string variable that is always ten characters long.
<..>
> Examples:
>
> ++++++++++ [10 of them]
> +++++++++1
> ++++++4321
> +987654321
Here're some ideas to get you going ...
>> ; Version 1
>> fillers: "++++++++++"
== "++++++++++"
>> str: "677"
== "677"
>> pos: (length? f) - (length? str) + 1
== 8
>> f: copy fillers
== "++++++++++"
>> change at f pos str
== ""
>> f
== "+++++++677"
>> ; Version 2
>> len: (length? f) - (length? str)
== 7
>> rejoin [ copy/part fillers len str ]
== "+++++++677"
>> ; Version 3
>> copy skip tail join fillers str -10
== "+++++++677"
I hope that helps,
Ingo
