Struct SystemScheduler 

pub struct SystemScheduler<Chain> { /* private fields */ }

Monomorphized staged scheduler. Created via SchedulerBuilder.

All system calls are direct (no vtable dispatch). The Chain type parameter encodes the full schedule — the compiler inlines the recursive run_schedule chain.

Propagation

The first stage always runs. Each subsequent stage runs only if the previous stage’s systems returned at least one true (OR semantics within a stage).

Does NOT call next_sequence — the global sequence is event-only.

Implementations

impl<Chain: RunSchedule> SystemScheduler<Chain>

pub fn run(&mut self, world: &mut World) -> usize

Run all stages with boolean propagation.

Returns the number of systems that actually ran.

pub fn len(&self) -> usize

Returns the total number of systems across all stages.

pub fn is_empty(&self) -> bool

Returns true if the scheduler contains no systems.