Question

i have a generic class in which i want to save a delegate that uses Type T as argument and return value. How do i assign a method to the attribute getValueDefault?

private delegate TOut GetValueDefault<in TIn, TOut>(string key, TIn defaultValue);

private GetValueDefault<T, T> getValueDefault = null;

For example a method with the signature bool ThirdPartyClass.foo(string key, bool defValue)

Answer 1

It should be as easy as:

private delegate TOut GetValueDefault<in TIn, TOut>(string key, TIn defaultValue);

private GetValueDefault<int, bool> getValueDefault = afoo;

static bool ThirdPartyClass.foo(string key, int defValue)
{
    \\...
}

However, if in all situations you are going to have equal in and out type parameters, you may simplify it to:

private delegate T GetValueDefault<T>(string key, T defaultValue);

private static GetValueDefault<bool> getValueDefault = afoo;