Ah... Thanks, Ista. Missed that typo.

-- Bert


On Tue, Sep 24, 2013 at 8:48 AM, Ista Zahn <istazahn@gmail.com> wrote:

> On Tue, Sep 24, 2013 at 11:40 AM, Bert Gunter <gunter.berton@gene.com>
> wrote:
> > Time to spend some time with the docs!
> >
> > ?egexp
>
> Just to avoid any confusion: the documentation topic is ?regexp, not ?egexp
>
> >
> > tells you:
> >
> > ". (Only ^ - \ ] are special inside character classes.)"
> >
> > See also inline below.
> >
> > Cheers,
> > Bert
> >
> >
> > On Tue, Sep 24, 2013 at 8:30 AM, Juliet Hannah <juliet.hannah@gmail.com
> >wrote:
> >
> >> Is it correct that one does not need to escape special characters such
> as
> >> "*" (are these
> >> properly called metacharacters) inside []. If so, what is the logic to
> >> this?
> >>
> >
> > Huh?  Are you aware that regular expressions are actually a context free
> > grammar IIRC (computer science gurus, please confirm or correct)?
> >
> >>
> >> mytest <- "he*llo"
> >> sub("[*]","",mytest)
> >> sub("\\*","",mytest)
> >>
> >> [] is easier to read for me than \\. Is this what people tend to use?
> >>
> >
> > That would require a survey to answer, would it not? Tastes vary, as they
> > say.
> >
> >
> >
> >> Thanks.
> >>
> >>         [[alternative HTML version deleted]]
> >>
> >> ______________________________________________
> >> R-help@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.
> >>
> >
> >
> >
> > --
> >
> > Bert Gunter
> > Genentech Nonclinical Biostatistics
> >
> > Internal Contact Info:
> > Phone: 467-7374
> > Website:
> >
> http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm
> >
> >         [[alternative HTML version deleted]]
> >
> > ______________________________________________
> > R-help@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.
>



-- 

Bert Gunter
Genentech Nonclinical Biostatistics

Internal Contact Info:
Phone: 467-7374
Website:
http://pharmadevelopment.roche.com/index/pdb/pdb-functional-groups/pdb-biostatistics/pdb-ncb-home.htm

	[[alternative HTML version deleted]]

