Nim based Firmware -- it's tiny!

[Stefan_Salewski]

> "right" way of doing it

But introducing the Value Type just because the destructor needs it is a bit 
ugly. For gintro we use code like
    
    
    grep -A14 "ToggleButton\* ="  ~/.nimble/pkgs/gintro-#head/gintro/gtk4.nim
      ToggleButton* = ref object of Button
    
    when defined(gcDestructors):
      proc `=destroy`*(self: var typeof(ToggleButton()[])) =
    
    
    
    Run

Are there disadvantages, may ToggleButton()[] allocate a temporary object?