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1bad4bdf52
- Added example in "Argument Converters"; it doesn't seem right for a tutorial to have no example in one of its topics (and instead just linking elsewhere).
- Added section "Command-Line Abbreviations."
- Added section "Keyword Argument into," showing how to:
- Collect options.
- Check for missing options.
- Provide option defaults.
39d39676c4
12 lines
446 B
Ruby
12 lines
446 B
Ruby
require 'optparse'
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parser = OptionParser.new
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parser.on('-x', '--xxx', 'Short and long, no argument')
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parser.on('-yYYY', '--yyy', 'Short and long, required argument')
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parser.on('-z [ZZZ]', '--zzz', 'Short and long, optional argument')
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options = {}
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parser.parse!(into: options)
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required_options = [:xxx, :zzz]
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missing_options = required_options - options.keys
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unless missing_options.empty?
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fail "Missing required options: #{missing_options}"
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end
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