Method: Optimist.die

Defined in:
lib/optimist.rb

.die(arg, msg = nil, error_code = nil) ⇒ Object

Informs the user that their usage of ‘arg’ was wrong, as detailed by ‘msg’, and dies. Example:

options do
  opt :volume, :default => 0.0
end

die :volume, "too loud" if opts[:volume] > 10.0
die :volume, "too soft" if opts[:volume] < 0.1

In the one-argument case, simply print that message, a notice about -h, and die. Example:

options do
  opt :whatever # ...
end

Optimist::die "need at least one filename" if ARGV.empty?

An exit code can be provide if needed

Optimist::die "need at least one filename", -2 if ARGV.empty?



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# File 'lib/optimist.rb', line 1246

def die(arg, msg = nil, error_code = nil)
  if @last_parser
    @last_parser.die arg, msg, error_code
  else
    raise ArgumentError, "Optimist::die can only be called after Optimist::options"
  end
end