From: Jason Mayer <slamboy@...>
Date: 2007-01-13T07:25:18+09:00
Subject: Re: What does this mean? ||=

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On 1/12/07, Keith Fahlgren <keith@audiobeta.com> wrote:
>
> Just to be explicit, it's both 'nil' or 'false' that will be reset to
> the new value:
>
> irb(main):001:0> f = false
> => false
> irb(main):003:0> f ||= 1
> => 1
> irb(main):004:0> f
> => 1    # was set
> irb(main):002:0> n = nil
> => nil
> irb(main):005:0> n ||= 1
> => 1
> irb(main):006:0> n
> => 1    # was set
> irb(main):007:0> t = true
> => true
> irb(main):008:0> t ||= 1
> => true
> irb(main):009:0> t
> => true  # wasn't set
>
> HTH,
> Keith


Wow thanks, I thought I understood it before, but that example really spells
it out explicitly.

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