Enum ValueChange 

pub enum ValueChange<T> {
    Unchanged,
    Set(T),
    Clear,
}

Normalized value change derived from a component event.

Variants

Unchanged

The component event did not change the value.

Set(T)

Replace the value with the supplied value.

Clear

Clear an optional value.

Implementations

impl<T> ValueChange<T>

pub const fn set(value: T) -> ValueChange<T>

Creates a value replacement change.

pub const fn clear() -> ValueChange<T>

Creates an optional value clear change.

pub const fn unchanged() -> ValueChange<T>

Creates a no-op value change.

Trait Implementations

impl<T> Clone for ValueChange<T>

where T: Clone,

fn clone(&self) -> ValueChange<T>

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl<T> Debug for ValueChange<T>

where T: Debug,

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

Formats the value using the given formatter.

impl<T> Eq for ValueChange<T>

where T: Eq,

impl<T> PartialEq for ValueChange<T>

where T: PartialEq,

fn eq(&self, other: &ValueChange<T>) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl<T> StructuralPartialEq for ValueChange<T>

where T: PartialEq,