A stack object, stack, is a LIFO (last-in-first-out) container type.

$stack() -> stack

Creates a new stack object.

Methods

:clear()

Removes all items from the stack.

:count() -> i64

Returns the number of items in the stack.

:is_empty() -> bool

Returns true if the stack is empty.

:peek() -> any

Returns the item on top of the stack without removing it. Returns an err if the stack is empty.

:pop() -> any

Removes and returns the item on top of the stack. Returns an err if the stack is empty.

:push(item: any)

Pushes an item onto the stack.