[crossroads1112]

I wrote something similar in C99 as well for another project. Initially, I used the same form used in this blog post however it's easy to see that the ergonomics for accessing the data are pretty terrible.

I eventually moved to a solution where I prepended the capacity and size to the block returned to the caller and then wrote helper functions that accessed/modified these values. This way the caller can access values in the returned array just as they would one returned from malloc.

The code (note, the `vec` type is just a typedef'd `void*`): https://github.com/crossroads1112/marcel/blob/master/src/ds/...