Struct CurrentGuard

pub struct CurrentGuard<'a, T>
where
    T: Any,
{ /* private fields */ }

Puts back the previous current pointer.

Implementations

impl<'a, T> CurrentGuard<'a, T>

where T: Any,

pub fn new(val: &mut T) -> CurrentGuard<'_, T>

Creates a new current guard.

Examples found in repository

examples/text.rs (line 17)

fn bar() {
    let mut bar = Foo { text: "good bye".to_string() };
    let guard = CurrentGuard::new(&mut bar);
    print_foo();
    print_foo();
    drop(guard);
}

fn main() {
    let mut foo = Foo { text: "hello".to_string() };
    {
        let guard = CurrentGuard::new(&mut foo);
        print_foo();
        print_foo();
        bar();
        drop(guard);
    }
    foo.text = "hi!".to_string();
}

Trait Implementations

impl<'a, T> Drop for CurrentGuard<'a, T>

where T: Any,

fn drop(&mut self)

Executes the destructor for this type.