Struct Delta 

pub struct Delta { /* private fields */ }

The parts of a document some set of changes touched. See the module docs.

Implementations

impl Delta

pub fn nothing() -> Delta

No change at all.

pub fn everything() -> Delta

An unknown change: every reader re-reads everything.

pub fn merge(&mut self, other: Delta)

Add what other touched, so the deltas of several syncs read as one.

pub fn is_empty(&self) -> bool

Nothing changed.

pub fn is_everything(&self) -> bool

The change is unknown: readers must re-read everything.

pub fn under(&self, obj: &ExId) -> Touched

How the object obj was touched.

pub fn touches(&self, obj: &ExId) -> bool

Whether anything at or below obj changed.

pub fn key(&self, obj: &ExId, key: &str) -> Touch

How key of the map obj was touched.

impl Delta

pub fn from_changes( doc: &AutoCommit, changes: &[Change], locate: &dyn Fn(&ExId) -> Option<Vec<(ExId, Prop)>>, ) -> Delta

The delta changes make to doc (which already holds them), read from their operations: each touched object, and the path to it. Paths come from locate when it knows the object, from the changes themselves for objects they create, and otherwise from the document.

Trait Implementations

impl Clone for Delta

fn clone(&self) -> Delta

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Delta

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

Formats the value using the given formatter.

impl Default for Delta

fn default() -> Delta

Returns the “default value” for a type.