From: Sean Chittenden <sean_ca_1979@...>
Date: 2001-08-14T05:10:28+09:00
Subject: [ruby-talk:19652] String#substr

        Perl/C/PHP have substr.... does the ruby equiv
exist outside of the use of regexp's?  Used with
String#index, I'd think this method would be really
useful.  It surprises me that I haven't seen it
referenced/used anywhere and that's actually half of
why I'm asking: did I miss this functionality
someplace under a different name?  I don't think so,
but I'm not 100% sure.  How have other people dealt w/
this? Is there an external module that implements this
functionality someplace?  Are there plans to include
it in 1.7?  -sc

        PS  Is anyone else noticing any problems when
trying to send email to the list?  It looks like a DNS
timeout on resolving host names, but this is the only
list that I seem to be having problems with (on about
40-50 other lists w/o issue).


Taken from perldoc -tf substr:
    substr EXPR,OFFSET,LEN,REPLACEMENT
    substr EXPR,OFFSET,LEN
    substr EXPR,OFFSET
            Extracts a substring out of EXPR and
returns it. First
            character is at offset `0', or whatever
you've set `$['
            to (but don't do that). If OFFSET is
negative (or more
            precisely, less than `$['), starts that
far from the end
            of the string. If LEN is omitted, returns
everything to
            the end of the string. If LEN is negative,
leaves that
            many characters off the end of the string.

--
Sean Chittenden

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