From: Robert Klemme <shortcutter@...>
Date: 2008-11-28T03:18:28+09:00
Subject: Re: Begin else pattern question

2008/11/26 Mikel Lindsaar <raasdnil@gmail.com>:
> What is the cleanest way of doing:
> def initialize(value)
>  begin
>    if value == 'blah'
>      a_action
>    else
>      b_action
>    end
>  rescue
>    b_action
>  end
> end
>
> That is.  If a is needed and doing a throws an exception, do b instead.
>  Otherwise, if a is not needed do b.
>
> Or is that the cleanest way?
>
> By cleanest, I mean l don't like calling b_action twice in the method if I
> don't have to, but it's a trade off on readability... and I don't _like_ the
> way the code looks now :)
>
> Any other simpler way to do this pattern?

def initialize(value)
  if value == 'blah'
    a_action rescue b_action
  else
    b_action
  end
end

Or if you _really_ want to get rid of the second call:

def initialize(value)
  raise "do b!" if value != 'blah'
  a_action
rescue Exception
  b_action
end

Cheers

robert

-- 
remember.guy do |as, often| as.you_can - without end