Kleene star


Kleene star

(text)(Or "Kleene closure", named after Stephen Kleene) Thepostfix "*" operator used in regular expressions,Extended Backus-Naur Form, and similar formalisms to specifya match for zero or more occurrences of the precedingexpression. For example, the regular expression "be*t" wouldmatch the string "bt", "bet", "beet", "beeeeet", and so on.