From: Joey Gibson <joeygibson@...>
Date: 2003-07-19T02:11:58+09:00
Subject: Re: Usage Message for GetoptLong

On Sat, 19 Jul 2003 01:05:06 +0900, "Robert Klemme" <bob.news@gmx.net>
wrote:

|||     def hasDescription?(optarray)
|||         case optarray[-1]
|||           when GetoptLong::REQUIRED_ARGUMENT,
|||                GetoptLong::NO_ARGUMENT,
|||                GetoptLong::OPTIONAL_ARGUMENT

Why not just key off of the length of the array? If you get a three element
array then you don't have a description; four elements means description. I
don't like keying off those constants because more could be added, and
since they are just numbers anyway, you _might_ get a false
positive/negative based on the description. Probably not, I guess... Ah
well. TMTOWTDI, I suppose. 

You could rewrite it thusly

def has_description?(optarray)
	optarray.length == 3
end

Can we get one or the other of these approaches added to the code base to
make this a standard part of GetoptLong? Matz, what do you think?

Joey


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