Q:

C++ Construction of Static Lambda Member of Template type

I have a class that contains a static member, the member is a lambda. 
The lambda does have fixed arguments but might have different captures. This is where the problem comes in. This static member is not default constructible.
It sort of must be static too and I cannot use type erasure patterns as it is on an embedded system. Anybody have any ideas or patterns that solve this problem. 
I can do in-place construction on a byte array of measured size but that creates its own problems and I want to avoid it.
What I have but don't like is:
EDIT 1 : Improved Example
More complete example found here:
https://wandbox.org/permlink/UMwsXSR6c2QYleiU
EDIT 2 : Further Improved Example
Improved version of the above:
https://wandbox.org/permlink/VTvGNlFRCNYG4J00
EDIT 3 : Fixed bug with return_t
https://wandbox.org/permlink/tl4BaH1zbutMV2nU

A:

You may want to do something like this
template <class T>
class StaticWrapper
{
    static T* t = nullptr;
    StaticWrapper(T&& tt) { 
        static T ttt {tt};
        t = &ttt;
    }
};

Same idea but no finicky casts and placement new.

