Struct Scratch 

pub struct Scratch { /* private fields */ }

Reusable buffers for propagate.

Capacity, not state: two calls with the same world produce the same result whatever this held beforehand. Owned by the caller so the pass can promise no steady-state allocation — hand it the same one every tick and it stops growing once the world stops.

Implementations

impl Scratch

pub fn new() -> Self

Empty. The first propagate sizes it.

pub fn with_capacity(entities: usize) -> Self

Sized up front, for a caller that would rather not allocate on the first tick.

Trait Implementations

impl Clone for Scratch

fn clone(&self) -> Scratch

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Scratch

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

Formats the value using the given formatter.

impl Default for Scratch

fn default() -> Scratch

Returns the “default value” for a type.