It's really as simple as Jooel states. You would use it to remove redundant characters from strings such as spaces or blank lines in file text.
It's so useful that I have it as a UDF.
Code:
; udfTRIM()
;
; Remove repeated characters from string, also removes leading and trailing
; characters.
;
Function udfTrim($s,$c)
While InStr($s,$c+$c) $s=Join(Split($s,$c+$c),$c) Loop
If Left($s,1)=$c $s=SubStr($s,2) EndIf
If Right($s,1)=$c $s=Left($s,-1) EndIf
$udfTrim=$s
EndFunction
A couple of examples
- $s=udfTrim($s," ") ; remove redundant spaces from string
- $sFileData=udfTrim($sFileData,@CRLF) ; remove blank lines from data
[edit]Oops - removed the leading/trailing stuff as it didn't work for all cases.[/edit]
[edit]Updated leading/trailing stuff - not as pretty as original but it works.[/edit]
