안녕하세요, below you can find C# 2.0 Generic Free Pattern example that I just invented ;). Only generic code is invoked, but it is called without generic type. I have a better idea of implementing this pattern, but it needs the introduction of 3rd usage of our keyword in C#, and I cannot make it. 하지만, I could make this pattern, and I hope you like it. Now you can write generic code that is used like no generic needed, so it is like JavaScript in C# when you use it and strong typed generics when you write it ;).
namespace GenericFreePattern
{
using System;
// Framework Code
internal class Comparer<T> : Comparer where T : IComparable, IComparable<T>
{
public Comparer(T x1, T x2)
{
this.x1 = x1;
this.x2 = x2;
}
private readonly T x1;
private readonly T x2;
public override int Compare()
{
return x1.CompareTo(x2);
}
}
public class Comparer
{
internal Comparer() {}
private readonly Comparer instance;
public Comparer(IComparable x1, IComparable x2) {
if (x1.GetType() != x2.GetType())
throw new InvalidOperationException(
"Arguments have different types!");
instance = (Comparer)Activator.CreateInstance(
typeof(Comparer<>)
.MakeGenericType(x1.GetType()),
new object[]{x1, x2});
}
public virtual int Compare()
{
return instance.Compare();
}
}
// Client Code
class Program
{
public static void Main(string[] args)
{
Console.WriteLine(
"new Comparer(3,5).Compare() = {0}",
new Comparer(3,5).Compare());
Console.Write("Press any key to continue...");
Console.ReadKey(true);
}
}
}
피 ;).
핑백: Third usage of C# out keyword with Roslyn Intro @ coding by to design