[R] Help with complicated regular expression

[jim holtman]

try this:

> x <- c('WORD(12  )', 'WORD[123)', 'WORD   (   123   )', "WORD(xx)", "WORD(1)")
> grep("[[:alnum:]]+[[:space:]]*\\([[:space:]]*[[:digit:]]+[[:space:]]*\\)", x)
[1] 1 3 5
>


On Fri, Nov 13, 2009 at 9:12 AM, Dennis Fisher <fisher at plessthan.com> wrote:
> Colleagues,
>
> I am using R (2.9.2, all platforms) to search for a complicated text string
> using regular expressions.  I would appreciate any help you can provide.
> The string consists of the following elements:
>        SOMEWORDWITHNOSPACES
>        any number of spaces and/or tabs
>        (
>        any number of spaces and/or tabs
>        integer
>        any number of spaces and/or tabs
>        )
>
> Examples include:
>        WORD (  123    )
>        WORD(1 )
>        WORD\t ( 21\t)
>        WORD \t ( 1 \t   )
> etc.
>
> I don't need to substitute anything, only to identify if such a string
> exists.
> Any help with regular expressions would be appreciated.
> Thanks.
>
> Dennis
>
>
>
> Dennis Fisher MD
> P < (The "P Less Than" Company)
> Phone: 1-866-PLessThan (1-866-753-7784)
> Fax: 1-866-PLessThan (1-866-753-7784)
> www.PLessThan.com
>
> ______________________________________________
> R-help at r-project.org mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide http://www.R-project.org/posting-guide.html
> and provide commented, minimal, self-contained, reproducible code.
>



-- 
Jim Holtman
Cincinnati, OH
+1 513 646 9390

What is the problem that you are trying to solve?