[plt-scheme] Checking if strings are only whitespace

From: Robby Findler (robby at cs.uchicago.edu)
Date: Sun Mar 19 09:37:51 EST 2006

At Sun, 19 Mar 2006 15:35:25 +0100, Hans Oesterholt-Dijkema wrote:
> > (define (is-space? x) (regexp-match #rx"^[ \t\n]*$" x))
> >   
> Thanks!, Is
> #rx"^[ \t\n]*$" 
> an inline construct?

It is a literal syntax for a regular expression. It means that the
regular expression is created when the code is compiled, instead of
when it is executed.

(BTW, Matthew's use of the regexp library was better -- less allocation
and a better regexp.)


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