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class method
OptionParser.inc
(untyped arg, ?::_ToI default) -> ::Integer?
inc(arg, default = nil)
lib/optparse.rb
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# File tmp/rubies/ruby-4.1.0-preview1/lib/optparse.rb, line 1159
def self.inc(arg, default = nil)
case arg
when Integer
arg.nonzero?
when nil
default.to_i + 1
end
end
Returns an incremented value of default according to arg.