Vec::insert

pub fn insert(int i, T x)

Inserts x at index i, shifting later elements one place to the right.

i may equal len() (append).

Called on a Vec value as value.insert(…).

Parameters#

Panics#

Panics when i is negative or greater than len().

Examples#

use tests::assert;
let v: Vec<int> = [1, 3];
v.insert(1, 2);
v.insert(3, 4);
assert!(v[1] == 2);
assert!(v[3] == 4);

See also#

• Vec::len
• Vec: A growable, heap-allocated vector of T values.
• Vec::new: Creates a new, empty vector.
• Vec::with_capacity: Creates an empty vector with room for at least n elements.
• Vec::from: Creates a vector holding a copy of the elements of the fixed array arr.
• Vec::push: Appends x to the end of the vector.
• Vec::pop: Removes the last element and returns it, or None when the vector is empty.
• Vec::remove: Removes the element at index i and returns it, shifting later elements left.