C#•3y ago

❔ Why hasn't my class implemented the interface?

public interface IFoo
{
    public IEnumerable<int> Get();
}

public class foo: IFoo
{
    public List<int> Get()
    {
        return null;
    }
}

public interface IFoo
{
    public IEnumerable<int> Get();
}

public class foo: IFoo
{
    public List<int> Get()
    {
        return null;
    }
}

public interface IFoo
{
    public IEnumerable<int> Get();
}

public class foo: IFoo
{
    public List<int> Get()
    {
        return null;
    }
}

public interface IFoo
{
    public IEnumerable<int> Get();
}

public class foo: IFoo
{
    public List<int> Get()
    {
        return null;
    }
}

Given that

List<int>

List<int>

List<int>

List<int> is a subtype of

IEnumerable<int>

IEnumerable<int>

IEnumerable<int>

IEnumerable<int> I don't see what the issue is here.