Excuse my ignorance but my small experience in Rust convinced me that the language actually promotes functional programming (you get bizarre errors when trying

Excuse my ignorance but my small experience in Rust convinced me that the language actually promotes functional programming (you get bizarre errors when trying golang or c++ style of programming). Registering handlers doesn’t sound functional at all. Quick search about reactive functional streams leads me to interesting solutions. For example tokio::sync::broadcast. I would love to hear your opinion on this.