peek {arrayhelpers}

A little stack.

Description

TODO: implement as reference class? Note: pop only removes elements. To retrieve them, use peek.

Usage

peek(x, an, n = 1L)

pop(x, an, n = 1L)

push (x, an) <- value

Arguments

x

the object

an

attribute holding the stack

n

numer of element to peek at and numer of elements to pop (delete), respectively

value

list of things to push on the stack.

Value

push and pop: the object with stack in list an pushed/popped by the n elements

peek: the nth stack element (without popping!)

Author(s)

Claudia Beleites