This was probably prompted by https://news.ycombinator.com/item?id=32704977 https://news.ycombinator.com/item?id=32704977 ("Those who do not know judy1 are doo

This was probably prompted by https://news.ycombinator.com/item?id=32704977 https://news.ycombinator.com/item?id=32704977 ("Those who do not know judy1 are doomed to reinvent it." apropos Roaring Bitmaps)