class Peggy::Optional
Matcher of 0 or 1 time.
Public Class Methods
new()
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Calls superclass method
Peggy::Multiple::new
# File lib/parse/builder.rb, line 174 def initialize super 0..1 end
Public Instance Methods
to_s()
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Convert element to String.
# File lib/parse/builder.rb, line 179 def to_s "#{wrap}?" end