From: Kiswono Prayogo <kiswono@...>
Date: 2012-11-14T14:12:15+09:00
Subject: Re: help me understand (method 1 : 0)

is the ternary if operator..

just try these lines on irb:

print ( true ? '1. this part returned' : '2. this part not returned' )
print ( false ? '1. this part not returned' : '2. this part returned' )

On Wed 14 Nov 2012 12:07:10 PM WIT, Soichi Ishida wrote:
> I got this piece of code from "RSpec Book" page 85
>
>
>      def exact_match_count(guess)
>        (0..3).inject(0) do | count, index |
>          count + (exact_match?(guess, index) ? 1 : 0)
>        end
>      end
>
> But I don't quite understand
>
>     ...) ? 1 : 0)
>
> part.
>
> Could anyone help me understand this?
>
> soichi
>