[Test] public void Not_Function()
{
Functional.UnaryFunction <int, bool> func1 = Functional.Not1(Functional.Bind1st <int, bool>(Functional.LessThan <int>, 29));
Assert.IsTrue(func1(12)); // !(29 < 12) == false;
Assert.IsFalse(func1(30)); // !(29 < 30) == true;
Assert.IsTrue(func1(29)); // !(29 < 29) == false;
Functional.BinaryFunction <int, int, bool> func2 = Functional.Not2 <int, int>(Functional.LessThan <int>);
Assert.IsFalse(func2(12, 29)); // !(29 < 12) == false;
Assert.IsTrue(func2(30, 29)); // !(29 < 30) == true;
Assert.IsTrue(func2(29, 29)); // !(29 < 29) == false;
}
[Test] public void Bind_ThreeTypes()
{
Functional.UnaryFunction <string, double> func1 = Functional.Bind1st <int, string, double>(Mux, 3);
double result = func1("2");
Assert.AreEqual(9, result);
Assert.AreEqual(3, lastLhs);
Assert.AreEqual("2", lastRhs);
Functional.UnaryFunction <int, double> func2 = Functional.Bind2nd <int, string, double>(Mux, "3");
result = func2(2);
Assert.AreEqual(8, result);
Assert.AreEqual(2, lastLhs);
Assert.AreEqual("3", lastRhs);
}
[Test] public void Bind_TwoTypes()
{
Functional.UnaryFunction <int, double> func1 = Functional.Bind1st <int, double>(Exp, 3);
double result = func1(2);
Assert.AreEqual(9, result);
Assert.AreEqual(3, lastLhs);
Assert.AreEqual(2, lastRhs);
Functional.UnaryFunction <int, double> func2 = Functional.Bind2nd <int, double>(Exp, 3);
result = func2(2);
Assert.AreEqual(8, result);
Assert.AreEqual(2, lastLhs);
Assert.AreEqual(3, lastRhs);
}
[Test] public void Bind_SameTypes()
{
Functional.UnaryFunction <int, int> func1 = Functional.Bind1st(AddEm, 10);
int result = func1(12);
Assert.AreEqual(22, result);
Assert.AreEqual(10, lastLhs);
Assert.AreEqual(12, lastRhs);
Functional.UnaryFunction <int, int> func2 = Functional.Bind2nd(AddEm, 10);
result = func2(12);
Assert.AreEqual(22, result);
Assert.AreEqual(12, lastLhs);
Assert.AreEqual(10, lastRhs);
}
public static OutputIterator <O> Transform <I, O>(IEnumerable <I> enumerable, OutputIterator <O> dest, Functional.UnaryFunction <I, O> func)
{
IEnumerator <I> enumerator = enumerable.GetEnumerator();
for (dest = IteratorUtil.Clone(dest); enumerator.MoveNext(); dest.MoveNext())
{
dest.Write(func(enumerator.Current));
}
return(dest);
}
public static OutputIterator <O> Transform <I, O>(InputIterator <I> begin, InputIterator <I> end, OutputIterator <O> dest, Functional.UnaryFunction <I, O> func)
{
for (begin = IteratorUtil.Clone(begin), dest = IteratorUtil.Clone(dest); !begin.Equals(end); begin.MoveNext(), dest.MoveNext())
{
dest.Write(func(begin.Read()));
}
return(dest);
}
