From: Jeremy <thinker5555@...>
Date: 2003-03-13T10:36:57+09:00
Subject: Re: How to add a destructive method to the String class...

Joel VanderWerf wrote:

>> I found that I needed a method that
>> capitalizes all the words in a string, assuming that each word is
>> seperated by a space. I did this, and it works fine:
>> 
>> class String
>>     def capwords
>>         self.split.each { |word| word.capitalize! }.join(" ")
>>     end
>> end
>> 
>> It does what I need, but it got me thinking.  How would I make this
>> destructive?
>>
>> I'd like to do this instesad:
>> 
>> title.capwords!
> 
> You gotta use destructive methods to write a destrucive method. Not
> fully tested...
> 
> irb(main):001:0> string = "this is the string"
> "this is the string"
> irb(main):002:0> class String; def capwords!; gsub!(/\b[a-z]/) {|ltr|
> ltr.upcase }; end; end
> nil
> irb(main):003:0> string.capwords!
> "This Is The String"

Thank you for this!  This solves the problem that Gennady spoke of with the
whitespace, which is very good indeed.

Thanks again,
Jeremy