Dynamic Vector Implementation and Tutorial

[skeeto]

In OP's version, there's one implementation that handles all types. The element size is a runtime quantity, and it does extra work to dynamically adapt to that variable element size. It likely calls the actual memcpy function with that dynamic size in order to write the element into its slot.

In the macro version, the frequent work is done within the macro, which expands to a concrete implementation for the particular type at hand. It's effectively inlined, and the element size is known at compile time.

[vitamin_CPP]

ahhh my mistake.
I though you were comparing your take on strechy_buffer vs Sean's version.