module String: sig .. end
String Validators
val any : Kwvalid.t
any: considers any string valid.
val notnull : Kwvalid.t
notnull: considers valid any string that is not the empty string ("") .
val notblank : Kwvalid.t
notblank: considers valid any non-empty string that does not consist solely of blanks (space, tab, carriage return and newline) .
val noblanks : Kwvalid.t
noblanks: considers valid any string that does not contain any blanks.
val range : ?desc:string -> (char * char) list -> Kwvalid.t
range ranges: considers valid any string that contains only characters from the given ranges.
val lowercase : Kwvalid.t
lowercase: considers valid any string that contains only lowercase alphabetic characters
val uppercase : Kwvalid.t
uppercase: considers valid any string that contains only uppercase alphabetic characters
val alphabetic : Kwvalid.t
alphabetic: considers valid any string that contains only alphabetic characters
val alphanumeric : Kwvalid.t
alphanumeric: considers valid any string that contains only alphanumeric characters