From: "Shot (Piotr Szotkowski)" <shot@...>
Date: 2009-05-06T20:50:03+09:00
Subject: Re: '=||'

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Eleanor McHugh:

> class Test
>   def method_missing symbol, *args
>     puts "calling method #{symbol}"
>   end
> end

> t =3D Test.new
> t[:a] ||=3D 17

> output:
> calling method []
>	calling method []=3D

> Notice how even though method_missing
> returns a value and is thus 'true'

No, puts returns nil.=20

> the sequence still attempts all parts of the expression, and

> t[:a] =3D t[:a] || 17

> output:
> calling method []
>	calling method []=3D
>	=3D> 17

> confirms that no short-circuited evaluation occurs.

class Test
  def method_missing symbol, *args
    puts "calling method #{symbol}"
    true
  end
end

t =3D Test.new

t[:a] ||=3D 17
# calling method []

t[:a] =3D t[:a] || 17
# calling method []
# calling method []=3D

=E2=80=94 Shot
--=20
Google Trends says CiviCRM is as popular as blueberry
pancakes. Woo!! Next up: waffles!        [Wes Morgan]

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