From: matt@... (matt neuburg)
Date: 2006-10-12T05:40:15+09:00
Subject: Re: match with string instead of regexp fails

Jan Svitok <jan.svitok@gmail.com> wrote:

> On 10/11/06, matt neuburg <matt@tidbits.com> wrote:
> > According to the 1.8.5 core API:
> >
> > str =~ obj => fixnum or nil
> >
> > Match. If obj is a Regexp, use it as a pattern to match against str. If
> > obj is a String, look for it in str (similar to String#index). Returns
> > the position the match starts, or nil if there is no match.
> >
> > So I expect "cat" =~ "a" #=> 1
> >
> > But:
> >
> > irb(main):013:0> RUBY_VERSION
> > => "1.8.5"
> > irb(main):014:0> "cat" =~ "a"
> > TypeError: type mismatch: String given
> >         from (irb):14:in `=~'
> >         from (irb):14
> >         from :0
> >
> > An undocumented change? Sorry if this has come up before, I did try to
> > find out. Thx - m.
> 
> In the CVS [1] there's a new documentation omitting the 'string'
> clause, so I suppose it's a documentation error.
> 
> If you know a bit of C you can see for yourself.
> 
> From the CVS history - the TypeError was added around 1.8.2, so it's
> there pretty long.
> 
> The doc was fixed between 1.8.5-pre1 and 1.8.5-pre2. Form that it
> seems that the docs on ruby-doc are rather old, and not exactly 1.8.5
> ones as they say...
> 
> [1] http://www.ruby-lang.org/cgi-bin/cvsweb.cgi/ruby/string.c?rev=1.182.2.53;
> content-type=text%2Fplain

Excellent, thanks. m.


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