Struct core_extensions::RunOnDrop

pub struct RunOnDrop<T, F> where
    F: FnOnce(T), { /* private fields */ }

Available on crate feature on_drop only.

A wrapper type that runs a closure at the end of the scope.

This takes both a value and a closure(that takes the value as a parameter), allowing you to access the value before the closure runs.

Example

use core_extensions::RunOnDrop;

fn main() { 
    let mut guard = RunOnDrop::new("Hello".to_string(), |string|{
        assert_eq!(string, "Hello, world!");
    });

    assert_eq!(guard.get(), "Hello");
     
    guard.get_mut().push_str(", world!");
}   

Implementations

impl<T, F> RunOnDrop<T, F> where
    F: FnOnce(T), 

pub fn new(value: T, function: F) -> Self

Constructs this RunOnDrop.

impl<T, F> RunOnDrop<T, F> where
    F: FnOnce(T), 

pub fn get(&self) -> &T

Reborrows the wrapped value.

pub fn get_mut(&mut self) -> &mut T

Reborrows the wrapped value mutably.

pub fn into_inner(self) -> T

Extracts the wrapped value, preventing the closure from running at the end of the scope.

Trait Implementations

impl<'a, T, F> Drop for RunOnDrop<T, F> where
    F: FnOnce(T), 

fn drop(&mut self)

Executes the destructor for this type.