From: Alex Fenton <aff28@...>
Date: 2008-05-28T22:45:01+09:00
Subject: Re: Merge collections of objects

John Butler wrote:
> Hi,
> 
> I wonder if there is a quick way to do this.
> 
> companyA has 2 employees "a", "b"
> 
> companyB has 3 employees "a", "b", "c"
> 
> I basically want to merge companyA employess with companyB employees so
> when i look at companyA the employees will equal "a", "b", "c"

Try the "|" method of Array

irb(main):001:0> comp_a = %w[a b c]
=> ["a", "b", "c"]
irb(main):002:0> comp_b = %w[a b]
=> ["a", "b"]
irb(main):003:0> comp_a | comp_b
=> ["a", "b", "c"]
irb(main):004:0> comp_a & comp_b
=> ["a", "b"]


a