Mandatory options with optparse

Ruby
1

Hi all,

I was playing with optparse (great stuff ;)) and I didn’t see how to
check if
a mandatory option have been supplied (note that I say mandatory
option,
not mandatory argument).

So, if I got the next chunk of code:

opts = OptionParser.new do |opts|
opts.banner = “My silly example”

opts.on("-m", “–message MESSAGE”, “A message to show”) do |m|
options.message = m
end
end

I figured out that I’d must check it by my own (if
options.message.nil?..),
but I only wanna know if there’s a “optparse-way”.

Thanks in advance!

2

Hi,

At Wed, 30 Aug 2006 01:06:20 +0900,
Imobach González Sosa wrote in [ruby-talk:211331]:

I figured out that I’d must check it by my own (if options.message.nil?..),
but I only wanna know if there’s a “optparse-way”.

There is no suck way. I had thought about the idea like it
formerly, but concluded that it’s easy to read and write in
ruby, rather than in mini-DSL.