Water 5-Common Data Types-String Regex

Match one of a given set of characters or strings

Contract
Parameter key	Default value	Type
a_type	opt
regex_string	opt	string
Parameter kind	Default value	Type
Other unkeyed arguments	opt	type.<one_of char string/>

Water Contract
<class pattern.one_of regex_string =opt=string _other_unkeyed=opt=<type.one_of char string/>=ekind.code="_add_to_environment" />

See also: is_type_for, get_string_segments, replace_string_segments, string_segment, char

Pattern that matches a character from a set of characters or strings.

pattern.<one_of "A" "Book" "C" />.regex_string

"(A|Book|C)"

Example: Matches one of the strings

pattern.<one_of "A" "Book" "C" />.
<is_type_for "xxx123Book!@#" />

true

Example: Matches several instances of the strings

<pattern pattern.start_of_line
         pattern.<one_or_more pattern.<one_of "A" "Book" "C" /> />
         pattern.end_of_line />.
<is_type_for "ABookABookAC" />

true

Example: Does not match the pattern

<pattern pattern.start_of_line
         pattern.<one_or_more pattern.<one_of "A" "Book" "C" /> />
         pattern.end_of_line />.
<is_type_for "ABookAZBookAC" />

false