Module vec

A contiguous growable array type with heap-allocated contents, written Vec<'bump, T>.

Vectors have O(1) indexing, amortized O(1) push (to the end) and O(1) pop (from the end).

Examples

You can explicitly create a Vec<'bump, T> with new:

use bumpalo::{Bump, collections::Vec};

let b = Bump::new();
let v: Vec<i32> = Vec::new_in(&b);

…or by using the vec! macro:

use bumpalo::{Bump, collections::Vec};

let b = Bump::new();

let v: Vec<i32> = bumpalo::vec![in &b];

let v = bumpalo::vec![in &b; 1, 2, 3, 4, 5];

let v = bumpalo::vec![in &b; 0; 10]; // ten zeroes

You can push values onto the end of a vector (which will grow the vector as needed):

use bumpalo::{Bump, collections::Vec};

let b = Bump::new();

let mut v = bumpalo::vec![in &b; 1, 2];

v.push(3);

Popping values works in much the same way:

use bumpalo::{Bump, collections::Vec};

let b = Bump::new();

let mut v = bumpalo::vec![in &b; 1, 2];

let two = v.pop();

Vectors also support indexing (through the Index and IndexMut traits):

use bumpalo::{Bump, collections::Vec};

let b = Bump::new();

let mut v = bumpalo::vec![in &b; 1, 2, 3];
let three = v[2];
v[1] = v[1] + 5;

Structs

Drain

A draining iterator for Vec<'bump, T>.

DrainFilter

An iterator produced by calling drain_filter on Vec.

IntoIter

An iterator that moves out of a vector.

Splice

A splicing iterator for Vec.

Vec

A contiguous growable array type, written Vec<'bump, T> but pronounced ‘vector’.