From: Nathaniel Talbott <nathaniel@...>
Date: 2003-12-01T12:07:34+09:00
Subject: Re: Usage message in optparse.. summarize method?

On Nov 30, 2003, at 21:37, Jeff Dickens wrote:

> I tried your script, and -h doesn't output anything.  I'm  using ruby 
> 1.8.0.

   jacob:~/tmp ntalbott$ ruby -v t.rb -h
   ruby 1.8.1 (2003-11-30) [powerpc-darwin]
   Usage: t [options]
       -d, --date=DATE                  specify a date
       -q, --quiet                      be verry quiet
       -h, --help                       Print this help information
   jacob:~/tmp ntalbott$ cat t.rb
   require 'optparse'

   ARGV.options do |options|
     options.on('-d', '--date=DATE', String, 'specify a date'){|v| puts 
"Date #{v} passed"}
     options.on('-q', '--quiet', 'be verry quiet') do
       puts "OK, I'm being very, very, very quiet... can't you tell?"
     end
     options.on_tail('-h', '--help', 'Print this help information'){puts 
options; exit}
     options.parse!
   end

Not sure why you had trouble; can you give more details?


> But I can't find diddly for examples of more advanced use of optparse. 
>  The
> stuff at learning-ruby.com and the FIRSTSTEP.ja.html file that comes 
> with
> the distribution are very basic.

I've used http://docs.meg.nu/local-docs/ruby/optparse/optparse.html a 
lot; it has an extensive example at the end.

HTH,


Nathaniel

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