[ 源代码： ruby-optimist ]
软件包：ruby-optimist（3.0.0-2）
Commandline parser for Ruby that just gets out of your way
Optimist is a commandline option parser for Ruby that just gets out of your way. One line of code per option is all you need to write.
For that, you get a nice automatically-generated help page, robust option parsing, command subcompletion, and sensible defaults for everything you don't specify.