| #[macro_use(defer)] extern crate scopeguard; | |
| use scopeguard::guard; | |
| fn f() { | |
| defer!(println!("Called at return or panic")); | |
| panic!(); | |
| } | |
| use std::fs::File; | |
| use std::io::Write; | |
| fn g() { | |
| let f = File::create("newfile.txt").unwrap(); | |
| let mut file = guard(f, |f| { | |
| // write file at return or panic | |
| let _ = f.sync_all(); | |
| }); | |
| // Access the file through the scope guard itself | |
| file.write_all(b"test me\n").unwrap(); | |
| } | |
| fn main() { | |
| f(); | |
| g(); | |
| } |