container (version 1.0.5)

addleft: Add Elements to the Left of Deques

Description

Add elements to left side of Deque objects.

Usage

addleft(.x, ...)
ref_addleft(.x, ...)
# S3 method for Deque
addleft(.x, ...)
# S3 method for Deque
ref_addleft(.x, ...)

Value

For Deque, an object of class Deque with the elements being added to the left of .x.

Arguments

.x

a [Deque] object

...

elements to be added.

Examples

d = deque(0)
add(d, a = 1, b = 2)         # |0, a = 1, b = 2|
addleft(d, a = 1, b = 2)     # |b = 2, a = 1, 0|