Struct NodeOpts 

pub struct NodeOpts {
    pub initial: HandleId,
    pub equals: EqualsMode,
    pub partial: bool,
    pub is_dynamic: bool,
    pub pausable: PausableMode,
    pub replay_buffer: Option<usize>,
    pub terminal_as_real_input: bool,
}

Per-kind opts for Core::register. Cross-kind config knobs live here; per-kind specifics (deps, fn_or_op) live on NodeRegistration.

Fields

initial: HandleId

Initial cached value. Only valid for state nodes (no deps + no fn + no op). NO_HANDLE starts the node sentinel.

equals: EqualsMode

Equality mode for outgoing emissions (R1.3.2). Defaults to EqualsMode::Identity.

partial: bool

First-run gate (R2.5.3 / D011). When true, the node fires as soon as ANY dep delivers a real handle; when false (default), the node holds until every dep has delivered.

is_dynamic: bool

Dynamic flag (R2.5.3) — fn declares actually-tracked dep indices per fire. Only meaningful when fn_or_op == Some(Fn(_)) AND deps non-empty.

pausable: PausableMode

Pause behavior mode (canonical §2.6). Default is PausableMode::Default. See PausableMode for the trade-offs.

replay_buffer: Option<usize>

Replay buffer cap (canonical R2.6.5 / Lock 6.G — Slice E1, 2026-05-07). None (default) disables; Some(N) keeps a circular buffer of the last N DATA emissions and replays them to late subscribers as part of the per-tier handshake (between Message::Start and any terminal slice). Only DATA is buffered; RESOLVED entries are NOT (R2.6.5 explicit “DATA only”).

terminal_as_real_input: bool

D263 — when true, the fire_fn first-run gate (R2.5.3) treats a terminal dep as “real input” so the node fires even if the only signal a dep ever delivered was a COMPLETE (no DATA). Mirrors the unconditional fire_operator semantics (fire_operator’s gate already counts dep terminals as real input — e.g. for Reduce). Default false preserves the historical gate (sentinel deps hold the node until they deliver real DATA). NOT yet widened onto the Impl parity contract per D196 + the parity-tests comment (“NOT widened onto Impl”); kept substrate-internal until a cross-arm scenario surfaces.

Trait Implementations

impl Clone for NodeOpts

fn clone(&self) -> NodeOpts

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NodeOpts

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

Formats the value using the given formatter.

impl Default for NodeOpts

fn default() -> Self

Returns the “default value” for a type.

impl Copy for NodeOpts