You're basically describing Swift: public func read(path: URL) throws -> Array<UInt8> { let file = try FileHandle(forReadingFrom: path) let

You're basically describing Swift: public func read(path: URL) throws -> Array<UInt8> { let file = try FileHandle(forReadingFrom: path) let bytes = try file.readToEnd() ?? Data() return Array(bytes) } Yes, the example above is not generic and not even idiomatic Swift, but it's a good glimpse into how Rust could look like. Hopefully someday Swift would become more safe, less tied to ObjC legacy and actually cross-platform. It's a shame that such a nice language is basically Apple-only.