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
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!)