Enum zng::var::VecChange

pub enum VecChange {
    Remove {
        index: usize,
        count: usize,
    },
    Insert {
        index: usize,
        count: usize,
    },
    Move {
        from_index: usize,
        to_index: usize,
    },
    Clear,
}

Represents a change in a ObservableVec.

Variants

Remove

Elements removed.

Fields

index: usize

Index of the first element removed, at the time of removal.

count: usize

Number of elements removed.

Insert

Elements inserted.

Fields

index: usize

Index of the first element inserted, at the time of insertion.

In ObservableVec::changes the index and count can be used to select the new elements in the vec because if any (re)move is made after insert the changes are collapsed to a Clear.

count: usize

Number of elements inserted.

Move

Element removed an reinserted.

Fields

from_index: usize

Index the element was first at.

to_index: usize

Index the element was reinserted after removal.

Clear

All elements removed/replaced.

Trait Implementations

impl Clone for VecChange

fn clone(&self) -> VecChange

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for VecChange

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

Formats the value using the given formatter.

impl PartialEq for VecChange

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Copy for VecChange

impl Eq for VecChange

impl StructuralPartialEq for VecChange