From: Todd Benson <caduceass@...>
Date: 2008-05-03T22:16:28+09:00
Subject: Re: a ? b : c

On Sat, May 3, 2008 at 8:01 AM, luka luka <dezertir@posta.ge> wrote:
> Hi all!
>  please explain, what is it? what he is doing?
>  example:
>
>  x = 6
>  y = x == 5 ? 0 : 2
>  puts y // prints 2
>
>  or:
>
>  x == 5 ? puts("one") : puts("two")  # Prints two
>
>  thanks.
>  --
>  Posted via http://www.ruby-forum.com/.

x = 6 # assignment
y = x == 5 ? 0 : 2
# if x equals 5, then assign 0 to y
# else assign 2 to y

It's the same as y = (x == 5 ? 0 : 2), because in ruby, == takes
precedence over = (as does the ternary operation)

See http://en.wikipedia.org/wiki/%3F: for more info on ternary op.

hth,
Todd