Expand description
A contiguous growable array type with heap-allocated contents, written
Vec<T>.
Vectors have O(1) indexing, amortized O(1) push (to the end) and O(1) pop (from the end).
Vectors ensure they never allocate more than isize::MAX bytes.
Examples
You can explicitly create a Vec with Vec::new:
let v: Vec<i32> = Vec::new();Run…or by using the vec! macro:
let v: Vec<i32> = vec![];
let v = vec![1, 2, 3, 4, 5];
let v = vec![0; 10]; // ten zeroesRunYou can push values onto the end of a vector (which will grow the vector
as needed):
let mut v = vec![1, 2];
v.push(3);RunPopping values works in much the same way:
let mut v = vec![1, 2];
let two = v.pop();RunVectors also support indexing (through the Index and IndexMut traits):
let mut v = vec![1, 2, 3];
let three = v[2];
v[1] = v[1] + 5;RunStructs
DrainFilterExperimental
An iterator which uses a closure to determine if an element should be removed.
A draining iterator for Vec<T>.
An iterator that moves out of a vector.
A splicing iterator for Vec.
A contiguous growable array type, written as Vec<T>, short for ‘vector’.