[Xeoncross]

The other packages I've missed are all Rust or C packages that manage to create absurdly compact or performant versions of low level structures and blocks like tries, probabilistic filters, encryption primitives, or custom binary storage solutions.

All things that Java, Go, C# and others just can't be the best at because of the overhead or GC.

[dralley]

There are definitely data structures that are a massive pain in the ass (if not impossible) without a GC of some kind.