Enum Relationship 

pub enum Relationship {
    Trigger,
    Observe,
}

Defines how wsnl relate to each other in the computation graph.

Relationships determine when and how changes propagate between wsnl. This is fundamental to the incremental computation model - wsnl only recompute when their dependencies change.

Variants

Trigger

The parent node will schedule this node when it mutates.

Use Trigger when this node should react to changes in the parent node. This creates an active dependency.

Observe

This node can read from the parent but won’t be automatically scheduled.

Use Observe when this node needs access to the parent’s data but doesn’t need to react to changes in the parent. The node can check if the parent has mutated using ExecutionContext::has_mutated(). This is most commonly used when a node reacts to a specific trigger relationship to one parent but just needs the data of another.

Implementations

impl Relationship

pub fn is_trigger(&self) -> bool

Returns true if this is a Relationship::Trigger, otherwise false

pub fn is_observe(&self) -> bool

Returns true if this is a Relationship::Observe, otherwise false

Trait Implementations

impl Clone for Relationship

fn clone(&self) -> Relationship

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Relationship

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

Formats the value using the given formatter.

impl Hash for Relationship

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 Relationship

fn eq(&self, other: &Relationship) -> 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 Relationship

impl Eq for Relationship

impl StructuralPartialEq for Relationship