From: gwtmp01@...
Date: 2005-10-19T04:52:45+09:00
Subject: Re: The Ruby Way to build an object unless nil?


On Oct 18, 2005, at 2:42 PM, Kevin Ballard wrote:
> I'm not sure what the ideal is, but this is certainly more terse:
> def mymethod
>   a = someobjectreference('a')
>   b = a.some_attribute unless a.nil?
>   c = b.some_attribute unless b.nil?
>   c.dosomething unless c.nil?
> end

How about:

module Kernel
   def send_each(*mlist)
     mlist.inject(self) do |obj, mname|
         return nil unless obj
         obj.send(mname)
     end
   end
end

puts "ruby rocks".send_each(:reverse, :chop, :capitalize)   # ->  
"Skcor ybu"



Gary Wright