Thanks a bundle everyone, I could not have hoped for a better set of
answers. The "Darts, Dice, and Coins" page is excellent, the original
papers are also very accessible, something that I have experienced
with a lot of early Computer Science papers.
In case anyone is interested in where Vose's Alias Method is
implemented, please see the link to the StatsBase.jl source below:
https://github.com/JuliaStats/StatsBase.jl/blob/2668b50a37ea968619a10e061b954a7240782d3b/src/sampling.jl#L358-L415
Thank you once again, Julians are always a friendly and helpful bunch.
Pontus