Enum Change 

pub enum Change {
    Kept,
    Entering,
    Leaving,
}

Which side of a change an item of a Pairs is on.

Variants

Kept

In both states: it moves from where it was to where it is.

Entering

Only in the new state: it arrives from a stand-in the caller chose.

Leaving

Only in the old state: it departs toward a stand-in the caller chose, and is gone once the transition ends.

Trait Implementations

impl Clone for Change

fn clone(&self) -> Change

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Change

impl Debug for Change

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

Formats the value using the given formatter.

impl Eq for Change

impl Hash for Change

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl PartialEq for Change

fn eq(&self, other: &Change) -> bool

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Change