Struct Arena 

pub struct Arena { /* private fields */ }

Contiguous f64 bump allocator.

Pre-allocates a fixed-size vector and hands out slices (ArenaSlice) by advancing an internal cursor.

Implementations

impl Arena

pub fn new(capacity: usize) -> Arena

Creates an arena with room for capacity f64 elements.

pub fn alloc_slice(&self, n: usize) -> Option<ArenaSlice>

Allocates a slice of n elements, returns None if capacity is insufficient.

pub fn write(&self, slice: &ArenaSlice, data: &[f64])

Writes data into the given slice (truncated if data exceeds the slice length).

pub fn read(&self, slice: &ArenaSlice) -> Vec<f64>

Reads the slice contents into a new Vec<f64>.

pub fn get(&self, slice: &ArenaSlice, index: usize) -> Option<f64>

Returns the element at index within the slice, or None if out of bounds.

pub fn set(&self, slice: &ArenaSlice, index: usize, value: f64)

Sets value at index within the slice.

pub fn reset(&self)

Resets the cursor to zero, making all memory available for reuse.

pub fn used(&self) -> usize

Number of currently allocated elements.

pub fn remaining(&self) -> usize

Number of elements still available.

pub fn capacity(&self) -> usize

Total capacity of the arena.