[disposedtrolley]

Nice! I’m writing in C this year too, although I’m very much a beginner in C.

What kinds of optimisations have you had to do? Are you hosting your code anywhere?

[mtlmtlmtlmtl]

For doing it in C, by far the most useful thing you could do is implement your own generic hash table. Having a good hash table handy makes things a lot easier. Though since you're a beginner you might want to find a good library for it at first. Writing a hash table is great C exercise though, so I definitely recommend doing it at some point.

I don't necessarily want to share my github as it contains my real name, but I'd be willing to send you a tarball of my 2020 code tomorrow if you send an email to mtlmtlmtlmtl at pm.me

I've just now started on day 1 for this year, so no code there yet worth showing off.

[rashkov]

I think I understand how to build a hash table except for one thing: which hash function should you use? Is there a simple one that’s good enough for most things? How do you pick one?