Using optarg to implement a simple cli

[pitosalas]

As an experiment... But it's not clear to me how I correctly bring in the ARGC and ARGV from the command line into the option parsing.

Or do I totally misunderstand what I am doing? (I am an experienced programmer by the way.)

[mosop]

Hi :) You can use the ARGV variable like this:

main.cr:

require "optarg"

class Model < Optarg::Model
  arg "foo"
end

result = Model.parse(ARGV)
puts result.foo

in your terminal:

crystal main.cr -- ":)"

output:

:)