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instance method

OptionParser::Switch#conv_arg

conv_arg(arg, val = [])

# File tmp/rubies/ruby-3.0.5/lib/optparse.rb, line 575
def conv_arg(arg, val = [])
  if conv
    val = conv.call(*val)
  else
    val = proc {|v| v}.call(*val)
  end
  return arg, block, val
end

Parses argument, converts and returns arg, block and result of conversion. Yields at semi-error condition instead of raising an exception.

See also .pattern #parse_arg .new #summarize

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