On Thu, Feb 14, 2013 at 1:43 PM, Edoardo Rossi <[email protected]> wrote:
> IMHO sometimes this is useful:
>
> def foo(something)
> dup.foo!(something)
> end
>
> def foo!(something)
> # do the work...
> end
There is one gotcha in this code: foo! will often return nil if
nothing is changed. A better approach is
def foo(something)
dup.tap {|copy| copy.foo!(something)}
end
Kind regards
robert
--
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http://blog.rubybestpractices.com/
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