Preface in the tutorials to follow we will examine the syntax for specifying patterns using regular expressions these patterns can be used in any of the regexp 4 case expressions and pattern matching earlier we gave several examples of pattern matching in defining functions—for example length and fringe 971 like string like pattern [escape escape-character] string not like pattern [escape escape-character] the like expression returns true if the string matches the
Preface in the tutorials to follow we will examine the syntax for specifying patterns using regular expressions these patterns can be used in any of the regexp 4 case expressions and pattern matching earlier we gave several examples of pattern matching in defining functions—for example length and fringe 971 like string like pattern [escape escape-character] string not like pattern [escape escape-character] the like expression returns true if the string matches the