[Thorrez]

Yes, std::vector and slice are different. My point is that a slice is similar to std::span.

With both slice and std::span, = does a shallow copy of just 2 or 3 pointers.

With std::vector = does a deep copy of every element, you have 2 distinct backing arrays.

Go forces you to use copy() and append() and rely on the garbage collector to make a slice fill the roll of std::vector. IMO it leads to some confusing code.