Function alloc::rc::try_unwrap
[−]
[src]
pub fn try_unwrap<T>(rc: Rc<T>) -> Result<T, Rc<T>>
Unstable
Unwraps the contained value if the Rc<T>
`Rc
If the Rc<T>
`Rcis not unique, an
` is not unique, an Err
`Erris returned with the same
` is returned with the same Rc<T>
`Rc
Examples
use std::rc::{self, Rc}; let x = Rc::new(3); assert_eq!(rc::try_unwrap(x), Ok(3)); let x = Rc::new(4); let _y = x.clone(); assert_eq!(rc::try_unwrap(x), Err(Rc::new(4)));