From: 7stud -- <bbxx789_05ss@...>
Date: 2009-05-06T08:09:41+09:00
Subject: Re: '=||'

Eleanor McHugh wrote:
> Are you referring to ||= ? If so it's one of the augmented assignment
> operators so you won't find it documented separately as it's syntactic
> sugar for:
> 
> x = x || some_other_value
> 
> 

Nope.

h = Hash.new(10)

h["red"] = h["red"] || 20

--output:--
{"red"=>10}


h = Hash.new(10)
h["blue"] ||= 20
p h

--output:--
{}


The statement:

x ||= val

is actually equivalent to:

x = val unless x

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