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Re: again strsplit [message #37748 is a reply to message #37745]

Wed, 21 January 2004 06:48

tam
Messages: 48
Registered: February 2000

Member

Reimar Bauer wrote:

> Hi all
>
> I have learned the /regex keyword but who could explain this:
>
> a='ABC$DEF'
> print,strsplit(a,'$',/extr)
>
> ABC DEF
>
> and
>
> a='ABC$DEF'
> print,strsplit(a,'$',/extr,/regex)
>
> ABC$DEF
>
>
> Why is this differnt?
>
>
> regards
>
> Reimar

Presuming IDL uses the same conventions for regular
expressions that have been popularized in Perl
I'd assume that if you've turned on regular expressions
that an unescaped $ has the special meaning of matching
the end of the string (and ^ the beginning).

So
print,strsplit(a,'f$', /extr, /regex)
will try to split on a terminal f and you should get

ABC$DE

as the result.

If you want to match with the character '$' then just escape
it with a backslash.

print,strsplit(a,'\$',/extr,/regex)

Regards,
Tom McGlynn

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[Message index]

		Re: again strsplit By: tam on Thu, 22 January 2004 08:11
		Re: again strsplit By: R.Bauer on Thu, 22 January 2004 06:59
		Re: again strsplit By: savoieNoSpam on Wed, 21 January 2004 08:42
		Re: again strsplit By: tam on Wed, 21 January 2004 06:48
		Re: again strsplit By: btt on Wed, 21 January 2004 06:46
		Re: again strsplit By: Paolo Grigis on Wed, 21 January 2004 06:45

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