Module Stack

module Stack = struct ... end

Types
`'b t`	The type of stacks containing elements of type `'a`. Abstract

Exceptions
`Empty`	Raised when `pop` is applied to an empty stack.

Functions


create

: unit -> 'c t

Return a new stack, initially empty.


push

: 'd -> 'd t -> unit

push x s adds the element x at the top of stack s.

pop

: 'e t -> 'e

pop s removes and returns the topmost element in stack s, or raises Empty if the stack is empty.

top

: 'f t -> 'f

top s returns the topmost element in stack s, or raises Empty if the stack is empty.


clear

: 'g t -> unit

Discard all elements from a stack.


length

: 'h t -> int

Return the number of elements in a stack.


iter

: f:('i -> unit) -> 'i t -> unit

iter f s applies f in turn to all elements of s, from the element at the top of the stack to the element at the bottom of the stack. The stack itself is unchanged.