Struct Column 

pub struct Column<T> { /* private fields */ }

Typed dense column for a single component type within one archetype.

Each row has parallel added_ticks and changed_ticks entries for change detection. Tick 0 is the sentinel meaning “never observed”.

Implementations

impl<T: Send + Sync + 'static> Column<T>

pub fn new() -> Self

Create an empty column.

pub fn push(&mut self, value: T)

Append a value at the end with sentinel ticks (0).

pub fn push_with_ticks(&mut self, value: T, added: u64, changed: u64)

Append a value with explicit tick stamps.

pub fn get(&self, row: usize) -> Option<&T>

Get an immutable reference by row index.

pub fn get_mut(&mut self, row: usize) -> Option<&mut T>

Get a mutable reference by row index.

pub fn swap_remove(&mut self, row: usize) -> T

Swap-remove and return the value at row. Tick vectors are kept in sync.

pub fn len(&self) -> usize

Number of rows.

pub fn is_empty(&self) -> bool

Whether the column is empty.

pub fn iter(&self) -> impl Iterator<Item = &T>

Iterate all values immutably.

pub fn iter_mut(&mut self) -> impl Iterator<Item = &mut T>

Iterate all values mutably.

pub fn added_tick(&self, row: usize) -> u64

The added tick for row (0 = sentinel / never stamped).

pub fn changed_tick(&self, row: usize) -> u64

The changed tick for row (0 = sentinel / never stamped).

pub fn set_added_tick(&mut self, row: usize, tick: u64)

Stamp the added tick for row.

pub fn set_changed_tick(&mut self, row: usize, tick: u64)

Stamp the changed tick for row.

pub fn added_ticks(&self) -> &[u64]

Slice of added ticks (parallel to data rows).

pub fn changed_ticks(&self) -> &[u64]

Slice of changed ticks (parallel to data rows).

Trait Implementations

impl<T: Send + Sync + 'static> AnyColumn for Column<T>

fn swap_remove_and_drop(&mut self, row: usize)

Swap-remove a row. The data is dropped.

fn move_to(&mut self, row: usize, dst: &mut dyn AnyColumn)

Move the data at row in this column into dst (which must be the same concrete Column<T>). The row is swap-removed from self.

fn len(&self) -> usize

Number of rows.

fn new_empty(&self) -> Box<dyn AnyColumn>

Create an empty column of the same concrete type.

fn stamp_ticks(&mut self, row: usize, added: u64, changed: u64)

Stamp both tick vectors at row.

fn as_any(&self) -> &dyn Any

fn as_any_mut(&mut self) -> &mut dyn Any

impl<T: Send + Sync + 'static> Default for Column<T>

fn default() -> Self

Returns the “default value” for a type.