From: ts <decoux@...>
Date: 2003-09-16T01:35:51+09:00
Subject: Re: Problem Dynamically Loading a Module

>>>>> "T" == Travis Whitton <whitton@atlantic.net> writes:


 Try this

T> class DynamicInclude
T>   def initialize(dynmod)
T>     DynamicInclude.load_module(dynmod)

       extend(Object.const_get(dynmod.to_s))

T>   end

T>   def DynamicInclude.load_module(modname)
T>     load "#{modname}.rb"
T>     include Object.const_get(modname.to_s)

  you don't need this include

T>   end
T> end

 Now if you are sure that these previous module don't exist you can write

svg% cat b.rb
#!/usr/bin/ruby

class DynamicInclude
   def initialize(dynmod)
      DynamicInclude.load_module(dynmod)
      extend(Object.instance_eval { remove_const(dynmod.to_s) })
   end

   def DynamicInclude.load_module(modname)
      load "#{modname}.rb"
   end
end

d = DynamicInclude.new("Hello")
d.greeting() # prints Hello
e = DynamicInclude.new("Goodbye")
e.greeting() # prints Goodbye
d.greeting() # prints Goodbye
svg% 

svg% b.rb
Hello
Goodbye
Hello
svg% 

 The load is made in Object, then the constant is removed to don't pollute
 Object 


Guy Decoux