Also common to set up "capture clauses" for lambdas as Rust does not have that in the language, IME most common with threads: spawn({ let a = a.clo

Also common to set up "capture clauses" for lambdas as Rust does not have that in the language, IME most common with threads: spawn({ let a = a.clone(); let b = &b; move || { // do something with the a you cloned and the b you borrowed } })