From: Jonathan Nielsen <jonathan@...>
Date: 2010-06-19T02:51:28+09:00
Subject: Re: String comparison. Why does Ruby consider this true?

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On Fri, Jun 18, 2010 at 11:46 AM, Abder-rahman Ali <
abder.rahman.ali@gmail.com> wrote:

> When I try for example to compare the following strings in Ruby, I get
> "true".
>
> puts 'Xeo' < 'ball'
>
> When I make 'Xeo' start with a lowercase letter, i get 'false'
>
> puts 'xeo' < 'ball'
>
> The second statement is clear, but why when I capitalize 'Xeo' I get
> true?
>
> Thanks.
> --
> Posted via http://www.ruby-forum.com/.
>
>
Because the '<' is doing a character-by-character compare on the strings.
 As it turns out, 'X' < 'b' is true, while 'x' < 'b' is false.  This is
because in the basic character set, the uppercase letters are lower-valued
than lowercase letters.  See http://www.asciitable.com/

-Jonathan Nielsen

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