[jasonwatkinspdx]

Judy arrays have never been particularly compelling, but for some reason gained huge mindshare among programmers on Slashdot.

Today it'd make much more sense to implement ART, which is dramatically simpler.

[vanderZwan]

As someone with a degree in contemporary arts who switched to programming I humbly disagree with this statement.

Jokes aside, it took me quite a bit of trial and error to figure out that you are (probably) referring to Adaptive Radix Trees. Because "art tree" doesn't exactly give useful results.