Enum arrow::array::Capacities

pub enum Capacities {
    Binary(usize, Option<usize>),
    List(usize, Option<Box<Capacities>>),
    Struct(usize, Option<Vec<Capacities>>),
    Dictionary(usize, Option<Box<Capacities>>),
    Array(usize),
}

Define capacities of child data or data buffers.

Variants

Binary

Binary, Utf8 and LargeUtf8 data types Define

• the capacity of the array offsets
• the capacity of the binary/ str buffer

Tuple Fields of Binary

0: usize1: Option<usize>

List

List and LargeList data types Define

• the capacity of the array offsets
• the capacity of the child data

Tuple Fields of List

0: usize1: Option<Box<Capacities>>

Struct

Struct type

• the capacity of the array
• the capacities of the fields

Tuple Fields of Struct

0: usize1: Option<Vec<Capacities>>

Dictionary

Dictionary type

• the capacity of the array/keys
• the capacity of the values

Tuple Fields of Dictionary

0: usize1: Option<Box<Capacities>>

Array

Don’t preallocate inner buffers and rely on array growth strategy

Tuple Fields of Array

0: usize

Trait Implementations

impl Clone for Capacities

fn clone(&self) -> Capacities

Returns a copy of the value.

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

Performs copy-assignment from source.

impl Debug for Capacities

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

Formats the value using the given formatter.