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nasso_devyesterday at 11:34 PM3 repliesview on HN

swiss tables were invented by engineers working at google's zurich office, hence the name

im surprised that go, a programming language also from google, wasn't using them!

for an excellent talk on the development of swiss tables i highly recommend this talk by Matt Kulukundis at CppCon 2017: "Designing a fast, efficient, cache-friendly hash table, step by step" https://youtu.be/ncHmEUmJZf4


Replies

hazztoday at 8:18 AM

The Rust std lib HashMap is powered by the hashbrown crate which is also a port of Swiss Tables. At a brief glance Ruby/Python don’t use this approach but I don’t see any reason why they couldn’t.

EdSchoutentoday at 3:49 AM

I guess it took a bit longer to get it adopted within Go because of some additional challenges:

https://go.dev/blog/swisstable#go-challenges

tialaramextoday at 12:20 AM

Go is much older than Swiss Tables. Since the hash table is a widely used container type and Go aspires to having a sort of "kitchen sink" stdlib I assume Go 1.0 had a hash table, and it can't be a Swiss Table because those weren't invented yet.

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