我希望能够实现密钥为Type
且值为Func<T>
的字典,其中T
是与密钥类型相同的对象:< / p>
Dictionary<Type, Func<T>> TypeDictionary = new Dictionary<Type, Func<T>>( ) /*Func<T> returns an object of the same type as the Key*/
TypeDictionary.Add( typeof( int ), ( ) => 5 );
TypeDictionary.Add( typeof( string ), ( ) => "Foo" );
因此,基本上,字典将填充引用Func<T>
的类型,这些类型将返回该值:
int Bar = TypeDictionary[ typeof( int ) ]( );
string Baz = TypeDictionary[ typeof( string ) ]( );
我如何实施和实施?
答案 0 :(得分:7)
这就像你将得到的那样接近:
void Main()
{
var myDict = new MyWrappedDictionary();
myDict.Add(() => "Rob");
var func = myDict.Get<string>();
Console.WriteLine(func());
}
public class MyWrappedDictionary
{
private Dictionary<Type, object> innerDictionary = new Dictionary<Type, object>();
public void Add<T>(Func<T> func)
{
innerDictionary.Add(typeof(T), func);
}
public Func<T> Get<T>()
{
return innerDictionary[typeof(T)] as Func<T>;
}
}