From: Lloyd Zusman <ljz@...>
Date: 2004-07-31T04:56:47+09:00
Subject: Re: Forward references?

"Robert Klemme" <bob.news@gmx.net> writes:

> "Lloyd Zusman" <ljz@asfast.com> schrieb im Newsbeitrag
> news:d62dd0tu.fsf@asfast.com...
>> Is there a way to define forward references to functions?  Due to my own
>> personal eccentricities, I like to have the main body of a program
>> appear at the top of its source file, and the functions it uses at the
>> end.
>>
>> [ ... ]
>
> Just define them duplicately, the first time with an empty body:
>
> # "prototypes"
> def foo;end
> def bar(name)end
>
> # main stuff
> x = foo()
> y = bar()
> puts x
> puts y
> exit 0
>
> # "functions"
> def foo
>   # foodoo
> end
>
> def bar(name)
>   # bardo
> end
>

Thank you very much, but this doesn't appear to work.  Here's what I
tried:

  def foo;puts "forward ref of foo";end
  def bar(arg);puts "forward ref of bar(#{arg})";end

  foo()
  bar('abc')
  exit(0);

  def foo
    puts "foo"
  end

  def bar(arg)
    puts "bar: #{arg}"
  end

When I ran it, it produced the following output:

  forward ref of foo
  forward ref of bar(abc)

In other words, the second function definitions did not override the
first ones.



-- 
 Lloyd Zusman
 ljz@asfast.com
 God bless you.