From: Gary Wright <gwtmp01@...>
Date: 2011-10-20T08:41:24+09:00
Subject: Re: efficient way to catch & continue on exception


On Oct 19, 2011, at 2:49 PM, Kassym Dorsel wrote:
> 
> I have the following :
> 
> hs = {}
> hs.default = nil
> hs['name3'] = command3
> hs['name2'] = command2
> hs['name1'] = command1
> 
> Where command* are methods that can fail and raise an exception. The
> only way I know to deal with this is :

A couple options:

hs = {}
hs['name3'] = (command3 rescue nil)
hs['name2'] = (command2 rescue nil)
hs['name1'] = (command1 rescue nil)


Or how about:

module Capture
  def capture(key)
    self[key] = yield
  rescue
    self[key] = nil
  end
end

hs = {}.extend Capture
hs.capture('name3') { command3 }
hs.capture('name2') { command2 }
hs.capture('name1') { command1 }