小编nev*_*iev的帖子

如果你为泛型类实现泛型扩展方法有更好的方法吗？因为完全调用func2是很自然的,func1<V>()而不是func2<T, V>()省略T参数并将其称为func2<V>()

public class A<T> where T : class {

    public V func1<V>() {
        //func1 has access to T and V types
    }
}

public static class ExtA {

    // to implement func1 as extension method 2 generic parameters required
    // and we need to duplicate constraint on T 
    public static V func2<T, V>(this A<T> instance) where T : class {
        // func2 has access to V & T 
    }
}