[ruby-core:45494] [ruby-trunk - Feature #5011] Add Perl 6-like main method definition support: accept command-line arguments as method arguments

Issue #5011 has been updated by mame (Yusuke Endoh).


Received.

Your proposal is interesting, but slightly vague.
I understand motivation, but not the detailed behavior.

If you tolerate the details, I guess you can do it with gem, without modifying ruby interpreter.

[load_main.rb]

  at_exit do
    if respond_to?(:main, true) && method(:main).source_location[0] == $0
      options = {}
      # parse command line options...
      main(ARGF, **options)
    end
  end

[bar.rb]

  def main(input)
    p :bar
  end

[foo1.rb]

  require "bar"
  def main(input, opt)
    p :foo1
  end

[foo2.rb]

  require "bar"

    
$ ruby -rload_main foo1.rb
:foo
$ ruby -rload_main foo2.rb

-- 
Yusuke Endoh <[e-mail]>
----------------------------------------
Feature #5011: Add Perl 6-like main method definition support: accept command-line arguments as method arguments
https://bugs.ruby-lang.org/issues/5011#change-27082

Author: rosenfeld (Rodrigo Rosenfeld Rosas)
Status: Assigned
Priority: Low
Assignee: matz (Yukihiro Matsumoto)
Category: 
Target version: 


Take a look at this:

http://perlgeek.de/en/article/5-to-6#post_14

I'm not really sure how this would look like in Ruby, but I like the idea of defining a main method could extract their params from command-line params.

This would also be an alternative for issue #4824:

http://redmine.ruby-lang.org/projects/ruby-19/issues/4824


-- 
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