Optparser question

ruby-talk
1

I am using optparser to parse arguments.How can I set a mandatory
option? If user doesn't specify this option, parse() method should throw
an error message.

thanks,

Zhao Yi

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2

There are no mandatory options - after all, they are _options_. You
can only have mandatory arguments to options:

http://www.ruby-doc.org/stdlib/libdoc/optparse/rdoc/classes/OptionParser.html

You need an extra flag which you set when the option is seen. Then you
can throw or do whatever after #parse has finished.

Kind regards

robert

···

2010/6/30 Zhao Yi <youhaodeyi@gmail.com>:

I am using optparser to parse arguments.How can I set a mandatory
option? If user doesn't specify this option, parse() method should throw
an error message.

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remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/