From: Stephen White <spwhite@...>
Date: 2001-07-23T16:49:57+09:00
Subject: [ruby-talk:18332] Re: capitalizing a string

On Mon, 23 Jul 2001, jared l. jennings wrote:

> One way that works is (assuming that string was called p)
> p[0..0].upcase + p[1..p.length]

I'm not finding anything much better than:

  p[0,1].upcase << p[1..-1]

which could be defined in a function so you don't have to look at it
every time you want to do this.

  class String
    def mycap
      str = dup
      str[0,1] = str[0,1].upcase!
      str
    end
  end

Then you just use "mycap" instead of "capitalize".

  "fooBarPoit".mycap     => "FooBarPoit"
  p = "fooBarPoit".mycap => "FooBarPoit"



I originally wrote this as:

  class String
    def mycap
      str[0,1].upcase!
      str
    end
  end

but the "[0,1]" generates an intermediate object that gets discarded
after being uppercased. Whilst I understand why, it's not syntaxically
obvious (to me) what is happening here.

-- 
  spwhite@chariot.net.au