From: Dan Doel <djd15@...>
Date: 2003-09-25T01:37:59+09:00
Subject: Re: Setting "variable" global variable ?

def global_variable_set(name, val)
    eval("proc { | x | $#{name} = x }").call val
end
global_variable_set("foo", [1, 2, 3])

Johan Holmberg wrote:

>Hi !
>
>I wonder if there is any way in Ruby of setting a "variable" global
>variable at runtime, without  using "eval".
>
>For example, could the following be done without "eval":
>
>      def my_set_global_variable(name, val)
>	  eval "#{name} = #{val.inspect}"
>      end
>
>      my_set_global_variable("$foo", [1,2,3])
>
>      p $foo          # gives [1, 2, 3]
>
>
>I would like to avoid "serializing" the "val" value above
>(done with the "inspect" call), and assign the original "val"
>directly instead.
>
>For instance variables there is "instance_variable_set", but is
>there something corresponding for global variables ?
>
>/Johan Holmberg
>
>
>
>  
>