Package jason.stdlib

Class empty

java.lang.Object
All Implemented Interfaces:
InternalAction, java.io.Serializable

@Manual(literal=".empty(argument)",
        hint="checks whether the argument does not have any term",
        argsHint="the term whose length is to be determined",
        argsType="string or list",
        examples={".empty([]): true",".empty([a,b]): false, the list has at least one term",".empty(\"a\"): false, the argument has at least one term"},
        seeAlso="")
public class empty
extends DefaultInternalAction

Internal action: .empty.

Description: checks whether the argument does not have any term.

Parameters:

  • + argument (string or list): the term whose length is to be determined.

Examples:

  • .empty([]): true.
  • .empty([a,b]): false, the list has at least one term.
  • .empty("a"): false, the argument has at least one term.
See Also:
Serialized Form
  • Field Details

  • Constructor Details

    • empty

      public empty()
  • Method Details