miniblog.

I've been learning some Common Lisp by writing some simple JSON munging programs. I'm sure it's not best practice — I should probably deserialise to CLOS automatically — but it's a nice way to get comfortable with the basics. It feels weird deliberately ignoring helpers though.

When writing long-lived programs (daemons etc) in Rust, I find myself asking *where* I should put data. In a GC'd language it's just "I have a string" but Rust forces me to find somewhere to put it. You do get a performance benefit for this work though.

I've just squeezed another 5% of performance out of difftastic by finding a few HashSet values that weren't FxHashSet. I do wonder whether hash DoS resistance is a good default. Sure, Rust programs are often pretty fast anyway, but it feels like a different threat model to the rest of Rust.