From: "Morris, Chris" <chris.morris@...>
Date: 2002-03-28T22:17:49+09:00
Subject: .send for global vars?

I posted this at the end of the "Variable variables in Ruby?" thread, so in
case it didn't get much attention there, I'm reposting to see if I can get
an answer.

I know how to use send on a class instance:

irb(main):017:0> class Test
irb(main):018:1> attr_accessor :a
irb(main):019:1> end
nil
irb(main):020:0> t = Test.new
#<Test:0x2a41518>
irb(main):021:0> t.send("a")
nil
irb(main):022:0> t.a = []
[]
irb(main):023:0> t.send("a")
[]
irb(main):024:0>

... but what do I send the message to for a global var?:

irb(main):002:0> $_foobar = "test"
"test"
irb(main):003:0> x = "foobar"
"foobar"
irb(main):008:0> send("$_" + x)
NameError: undefined method `$_foobar' for #<Object:0x2a79618>
        from (irb):8:in `send'
        from (irb):8

... who 'owns' the global var? 

Chris Morris
chris.morris@snelling.com