Struct WkbCapacity

pub struct WkbCapacity { /* private fields */ }

A counter for the buffer sizes of a GenericWkbArray.

This can be used to reduce allocations by allocating once for exactly the array size you need.

Implementations

impl WkbCapacity

pub fn new(buffer_capacity: usize, offsets_capacity: usize) -> Self

Create a new capacity with known sizes.

pub fn new_empty() -> Self

Create a new empty capacity.

pub fn is_empty(&self) -> bool

Return true if the capacity is empty.

pub fn buffer_capacity(&self) -> usize

The capacity of the underlying data buffer

pub fn offsets_capacity(&self) -> usize

The capacity of the underlying offsets buffer

pub fn add_geometry<'a>( &mut self, geom: Option<&'a (impl GeometryTrait<T = f64> + 'a)>, )

Add a Geometry to this capacity counter.

pub fn from_geometries<'a>( geoms: impl Iterator<Item = Option<&'a (impl GeometryTrait<T = f64> + 'a)>>, ) -> Self

Create a capacity counter from an iterator of Geometries.

pub fn num_bytes<O: OffsetSizeTrait>(&self) -> usize

The number of bytes an array with this capacity would occupy.

Trait Implementations

impl Add for WkbCapacity

type Output = WkbCapacity

The resulting type after applying the + operator.

fn add(self, rhs: Self) -> Self::Output

Performs the + operation.

impl Clone for WkbCapacity

fn clone(&self) -> WkbCapacity

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for WkbCapacity

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

Formats the value using the given formatter.

impl Default for WkbCapacity

fn default() -> Self

Returns the “default value” for a type.

impl Copy for WkbCapacity