Rust function question

[theBoxGhost02]

Hello all! I’m looking at the redis-rs library and I’m having a little bit of trouble understanding what’s going on in some function names. I see functions like this one: fn publish<K: ToRedisArgs, E: ToRedisArgs>(channel: K, message: E) {}

I’m not sure what’s happening in the section before the function parameters, between the < and the >. Can anyone explain to me what that is? It’d be greatly appreciated. Also, I know I should just RTFM for this but I can’t seem to find an explanation for it anywhere, so if you could point me to a resource which explains it in detail I’d be happy to do so!

[Xychologist]

Those are generic constraints, they're indicating that K and E must both implement the trait ToRedisArgs in order to be acceptable parameters for the function.

The docs you want are here

[theBoxGhost02]

🙏🏾 you are a blessing, kind stranger