Struct OnPanic 

pub struct OnPanic<T, F: FnOnce(T)>(/* private fields */);

Runs action with the guarded state if the current scope unwinds, and nothing otherwise.

See the module documentation for what the action may do. Use on_panic when there is no state to carry.

Implementations

impl<T, F: FnOnce(T)> OnPanic<T, F>

pub fn new(state: T, action: F) -> Self

Arms the guard, parking state in it until the scope ends one way or the other.

pub fn disarm(self) -> T

Ends the guarded scope the returning way, handing the state back untouched.

Trait Implementations

impl<T, F: FnOnce(T)> Debug for OnPanic<T, F>

where Option<(T, F)>: Debug,

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<T, F: FnOnce(T)> Drop for OnPanic<T, F>

fn drop(&mut self)

Executes the destructor for this type.

fn pin_drop(self: Pin<&mut Self>)

🔬This is a nightly-only experimental API. (pin_ergonomics)

Execute the destructor for this type, but different to Drop::drop, it requires self to be pinned.