Struct undo::TryFromFn

pub struct TryFromFn<F, T> { /* private fields */ }

Action made from a fallible function.

Same as FromFn but for functions that outputs Result.

Implementations

impl<F, T> TryFromFn<F, T>

pub const fn new(f: F) -> Self

Creates a new TryFromFn from f.

Trait Implementations

impl<F, T, E> Action for TryFromFn<F, T>where F: FnMut(&mut T) -> Result<(), E>, T: Clone,

type Target = T

The target type.

type Output = Result<(), E>

The output type.

fn apply(&mut self, target: &mut Self::Target) -> Self::Output

Applies the action on the target.

fn undo(&mut self, target: &mut Self::Target) -> Self::Output

Restores the state of the target as it was before the action was applied.

fn redo(&mut self, target: &mut Self::Target) -> Self::Output

Reapplies the action on the target.

fn merge(&mut self, other: Self) -> Merged<Self>where Self: Sized,

Used for manual merging of actions. See Merged for more information.

impl<F: Clone, T: Clone> Clone for TryFromFn<F, T>

fn clone(&self) -> TryFromFn<F, T>

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl<F: Debug, T: Debug> Debug for TryFromFn<F, T>

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

Formats the value using the given formatter.