The String data type

The data type of strings is String. By default, String matches strings of any length. You can use parameters to restrict which values String matches.

Parameters

The full signature for String is:

String[<MIN LENGTH>, <MAX LENGTH>]

These parameters are optional. They must be listed in order; if you need to specify a later parameter, you must also specify values for any prior ones.

Position	Parameter	Data type	Default value	Description
1	Minimum length	Integer	0	The minimum number of (Unicode) characters in the string. This parameter accepts the special value default, which uses its default value.
2	Maximum length	Integer	infinite	The maximum number of (Unicode) characters in the string. This parameter accepts the special value default, which uses its default value.

Examples:

• String

  Matches a string of any length.

• String[6]

  Matches a string with at least six characters.

• String[6,8]

  Matches a string with at least six and at most eight characters.