DelegateParameter1 Delegate

Provide a predefined Delegate to register a C# method to be called from SWI-Prolog

Declaration Syntax

Visual Basic

Visual C++

public delegate bool DelegateParameter1(
	PlTerm term
)

Public Delegate Function DelegateParameter1 ( 
	term As PlTerm
) As Boolean

public delegate bool DelegateParameter1(
	PlTerm term
)

type DelegateParameter1 = 
    delegate of 
        term : PlTerm -> bool

Parameters

term (PlTerm)

Return Value

Boolean
true for succeeding otherwise false for fail

Examples

See also the example in DelegateParameter2.

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[TestMethod] public void t_creating_a_list() { Delegate d = new DelegateParameter1(create_list); PlEngine.RegisterForeign(d); for (int i = 1; i < 10; i++) { PlTerm t = PlQuery.PlCallQuery("create_list(L)"); Assert.AreEqual("[a,b,c]", t.ToString(), "create_list failed!"); } } public static bool create_list(PlTerm list) { return list.Unify(new PlTerm("[a,b,c]")); }

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[TestMethod]
public void t_creating_a_list()
{
    Delegate d = new DelegateParameter1(create_list);
    PlEngine.RegisterForeign(d);
    for (int i = 1; i < 10; i++)
    {
        PlTerm t = PlQuery.PlCallQuery("create_list(L)");
        Assert.AreEqual("[a,b,c]", t.ToString(), "create_list failed!");
    }
}
public static bool create_list(PlTerm list)
{
    return list.Unify(new PlTerm("[a,b,c]"));
}