Struct BlackboardObserver 

pub struct BlackboardObserver { /* private fields */ }

A simple change-notification system for the blackboard.

Implementations

impl BlackboardObserver

pub fn new() -> Self

pub fn watch(&mut self, key: impl Into<String>)

Register a key to watch.

pub fn poll(&mut self, bb: &Blackboard)

Poll the blackboard for changes to watched keys.

pub fn drain_changes(&mut self) -> Vec<String>

Returns and clears the list of changed keys since last poll.

pub fn has_changed(&self, key: &str) -> bool

Check whether a key changed in the last poll.

Trait Implementations

impl Clone for BlackboardObserver

fn clone(&self) -> BlackboardObserver

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for BlackboardObserver

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

Formats the value using the given formatter.

impl Default for BlackboardObserver

fn default() -> BlackboardObserver

Returns the “default value” for a type.