From: "mame (Yusuke Endoh)" <mame@...>
Date: 2012-03-25T14:09:49+09:00
Subject: [ruby-core:43600] [ruby-trunk - Feature #3388][Feedback] regexp support for start_with? and end_with?


Issue #3388 has been updated by mame (Yusuke Endoh).

Status changed from Open to Feedback

A patch is welcome.

-- 
Yusuke Endoh <mame@tsg.ne.jp>
----------------------------------------
Feature #3388: regexp support for start_with? and end_with?
https://bugs.ruby-lang.org/issues/3388#change-25096

Author: trans (Thomas Sawyer)
Status: Feedback
Priority: Normal
Assignee: 
Category: core
Target version: 2.0.0


=begin
 ruby-1.9.2-head > "aBcdeFghIj".start_with?(/abc/i)
 => false 
 
 In my implementation of start_with? it is easy enough to utilize #index, which works fine:
 
   def start_with?(pattern)
     index(pattern) == 0
   end
 
 But #end_with? is more difficult, and I had to use regular expressions.
 
     def end_with?(suffix)
       suffix = Regexp.escape(suffix) if String===suffix
       /#{suffix}$/.match(self) ? true : false
     end
 
 However, we might get rid of the '? true : false' and return the MatchData, since that could be useful information.
=end



-- 
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