Package jason.stdlib

Class list

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

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

Internal action: .list.

Description: checks whether the argument is a list, e.g.: "[a,b]", "[]".

Parameter:

  • + argument (any term): the term to be checked.

Examples:

  • .list([a,b,c]): true.
  • .list([a,b,c(X)]): true.
  • .list(b(10)): false.
  • .list(10): false.
  • .list("home page"): false.
  • .list(X): false if X is free, true if X is bound to a list.
  • .list(a(X)): false.
See Also:
atom, literal, number, string, structure, ground, Serialized Form
  • Field Details

  • Constructor Details

    • list

      public list()
  • Method Details