C#•2y ago

How would I check if a generic type is unmanaged, then pass it to a method with where T ; unmanaged?

I have a method that needs to call different methods based on whether T is managed or not. I'm not sure how to check if T is unmanaged, and also tell the compiler that it can use it in the method with the unmanaged constraint.

public unsafe T SomethingUnmanaged<T>(int stuff) where T : unmanaged
{
    //do something
    return whatever;
}
public unsafe T SomethingManaged<T>(int stuff)
{
    //do something different
    return whatever;
}
public unsafe T Something<T>(int stuff)
{
    if (T is unmanaged)
        return SomethingUnmanaged<T>(stuff);
    else
        return SomethingManaged<T>(stuff);
}

public unsafe T SomethingUnmanaged<T>(int stuff) where T : unmanaged
{
    //do something
    return whatever;
}
public unsafe T SomethingManaged<T>(int stuff)
{
    //do something different
    return whatever;
}
public unsafe T Something<T>(int stuff)
{
    if (T is unmanaged)
        return SomethingUnmanaged<T>(stuff);
    else
        return SomethingManaged<T>(stuff);
}

3 Replies

333fred•2y ago

You could, in theory, use a ton of reflection to do it But you're probably boxing something that shouldn't be boxed if you do

NoSkillPureAndy•2y ago

I settled for a very big switch expression

Accord•2y ago

✅ This post has been marked as answered!

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How would I check if a generic type is unmanaged, then pass it to a method with where T ; unmanaged?