private static TDelegate CreateDelegate <TDelegate>(MulticastDelegate theDelegate, object[] arguments)
where TDelegate : class
{
var partialApp = new PartialApplication(theDelegate, arguments);
return(partialApp.AdaptTo <TDelegate>());
}
public void L3_P2_UsePartial()
{
// Now, this returns me a function (int -> int):
var addThree = PartialApplication(3);
// Which I can apply like this:
var eight = addThree(5);
var ten = addThree(7);
var eightteen = eight + ten;
Console.WriteLine(eightteen);
// I could also directly call this:
PartialApplication(5)(8);
// And we can also write the same partial application with a simple lambda:
Func <int, Func <int, int> > PartialApplication2 = x => y => x + y;
var r = PartialApplication2(25)(17);
Console.WriteLine(r);
}
/// <summary>
/// Partial apply maybe value to maybe function of arity 2 by using partial apply
/// </summary>
public static Maybe <Func <T2, R> > Apply <T1, T2, R>(this Maybe <Func <T1, T2, R> > self, Maybe <T1> arg) =>
self.IsSome && arg.IsSome
? Maybe <Func <T2, R> > .Some(PartialApplication.papply(self.Value, arg.Value))
: Maybe <Func <T2, R> > .None;
