Macro try_scope 

macro_rules! try_scope {
    ($($t:tt)*) => { ... };
}

Just like the unstable try block, this macro runs the code inside of it, but in a context where returns return from it instead of the top function, acting like a try-catch in a traditional language. This is done by immediately calling a closure.

Example

use functionality::try_scope;
let r = try_scope! {
    let x = Err("helloo")?;
    Ok(())
};
assert_eq!(r, Err("helloo"));