In Rust this is achieved using `if let` for anything that uses `Result` and `Drop` (it's kinda neat how a few orthogonal features fit nicely together like that)

In Rust this is achieved using `if let` for anything that uses `Result` and `Drop` (it's kinda neat how a few orthogonal features fit nicely together like that): if let Ok(f) = File::open(filename) { f.read(); // drop(f) automatic here } But Rust's move semantics give you extra flexibility, because you don't have to close it if you don't want to. let keep = None; if let Ok(f) = File::open(filename) { f.read(); if random() { keep = Some(f); } } // the file *may* be usable beyond the first scope, // and it's still dropped correctly. Values aren't dropped simply at the end of their initial scope (as in `with` or on-stack RAII), but after their last use, and language semantics allow the compiler to track globally where the last use is.