Hans Mackowiak wrote in post #1061260:
> there are two ways:
>
> pass it as symbol:
>
> aaa('hello', :world)
>
> or pass it as method object
>
> aaa('hello', method(:world))
>
>
> depend on what you want todo
>
>
>
> PS: no " " before the "(" or you get many trouble

If I pass the method world as a symbol, certainly this is not executed 
in the arguments, But nor is running if I invoke in the method aaa. 
example:

def world
  print 'world!'
end

def aaa(string, method)
  print string
  method #INVOKING THE METHOD
end

aaa('hello', :world)

What I can do?.

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