Best Tip

Repost from 2020

For the best answer to a question tagged with tips, because this site isn't just about competing with one another, but also about helping each other improve our golfing skills

The shortest infinite for comprehension (self-nomination by pxeger)

While answering Write an infinitely nested generator comprehension, I discovered a way to shorten something you might think to be totally optimal, which felt like a crazy new discovery to make.

s isn't longest first, but ⊇ is by Unrelated String

In Brachylog, s is the obvious builtin for "get all contiguous sublists." The trouble is that you often want to generate the longest sublist first, and s doesn't do that: it starts with all sublists that include the first element. However, Unrelated String realized that ⊇, "get all sublists, not necessarily contiguous," does generate the longest sublists first, and furthermore that the non-contiguous results can be easily removed by combining ⊇ with s. This tip is non-obvious and really useful; I've used it twice already.