Enum CoreEffect 

pub enum CoreEffect {
    Emit(Emit),
    Dispatch(Dispatch),
    StateChange(StateChange),
}

Side effects produced by Core::apply that the host must handle.

Core is zero-I/O: it never writes to stdout, opens windows, or runs platform operations. Instead it returns these effects as commands for the host (the iced daemon or headless runner) to execute. This keeps Core testable and mode-agnostic.

Effects are returned in a Vec and should be processed in order. Some variants (e.g. StateChange::SyncWindows) may depend on prior tree mutations from the same apply call.

Variants are grouped by conceptual category so hosts can dispatch on the outer variant first (emit vs dispatch vs state change) and then on the inner typed sub-variant.

Variants

Emit(Emit)

Write something to the outgoing wire stream.

Dispatch(Dispatch)

Run a platform or widget operation against the renderer.

StateChange(StateChange)

Update host-owned state that lives outside Core.

Trait Implementations

impl Debug for CoreEffect

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

Formats the value using the given formatter.