Using a out parameter in Func Delegate

Question

I have a method signature

bool TryGetItem(string itemKey,out Item item)

How can i encapsulate this signature in

delegate V Func<T,U,V>(T input, out U output)

as in the post: Func<T> with out parameter ?

Answer 1

You are just written answer.

If you in .net 4.0 or above you can specify variance for parameters.

public delegate TV MyFunc<in T, TU, out TV>(T input, out TU output);

Then use:

bool TryGetItem(string itemKey,out Item item);

MyFunc<string, Item, bool> func = TryGetItem;