[ Advanced Control and Suspensions | The ECLiPSe Built-In Predicates | Reference Manual | Alphabetic Index ]

delayed_goals(?Var, ?GoalList)

Succeeds if GoalList is the list of all goals delayed by the variable Var.
?Var
Any term.
?GoalList
List or variable.

Description

Unifies GoalList with the list of all goals delayed by the variable Var. This list contains all goals that will be woken if the variable Var will be instantiated. If there are no such goals, e.g. when Var is not a variable, GoalList is unified with nil.

Fail Conditions

Fails if GoalList does not unify with the list of goals delayed by the variable Var. It also fails when GoalList contains the right elements but in different order.

Resatisfiable

No.

Examples

Success:
    [eclipse]: X > 0, X < 5, delayed_goals(X, L).

    X = _d103
    L = [_d103 > 0, _d103 < 5]

    Delayed goals:
        _d103 > 0
        _d103 < 5
    yes.
    [eclipse]: X > 0, X = 1, delayed_goals(X, L).

    X = 1
    L = []
    yes.
Fail:
    X > 0, delayed_goals(X, []).

See Also

delayed_goals / 1, delayed_goals_number / 2, subcall / 2