[R] how to get to interesting part of pattern match

[Jean Eid]

sub(".*/", "", "abc/foo")
[1] "foo"


Jean

On Thu, 18 Nov 2004, Vadim Ogranovich wrote:

> Hi,
>
> I am looking for a way to extract an "interesting" part of the match to
> a regular expression. For example the pattern "[./](*.)" matches a
> substring that begins with either "." or "/" followed by anything. I am
> interested in this "anything" w/o the "." or "/" prefix. If say I match
> the pattern against "abc/foo" I want to get "foo", not "/foo". In Perl
> one can simply wrap the "interesting" part in () and get it out of the
> match. Is it possible to do a similar thing in R?
>
> There seems to be a way to refer to the match, see below, but I couldn't
> figure out how to make gsub return it.
> > gsub("[./](*.)", "\\1", "abc/foo")
> [1] "abcfoo"
>
>
> Thanks,
> Vadim
>
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