Package jason.stdlib

Class string

All Implemented Interfaces:
InternalAction, Serializable

@Manual(literal=".string(argument)", hint="checks whether the argument is a string", argsHint="the term to be checked", argsType="term", examples={".string(\"home page\"): true",".string(b(10)): false",".string(b): false",".string(X): false if X is free, true if X is bound to a string"}, seeAlso={"jason.stdlib.atom","jason.stdlib.list","jason.stdlib.literal","jason.stdlib.number","jason.stdlib.structure","jason.stdlib.ground"}) public class string extends DefaultInternalAction

Internal action: .string.

Description: checks whether the argument is a string, e.g.: "a".

Parameter:

  • + arg[0] (any term): the term to be checked.

Examples:

  • .string("home page"): true.
  • .string(b(10)): false.
  • .string(b): false.
  • .string(X): false if X is free, true if X is bound to a string.
See Also: