propeller.push.state
Push states
empty-stack?
(empty-stack? state stack)Returns true if the stack is empty
example-state
Example of a Push state.
get-args-from-stacks
(get-args-from-stacks state stacks)Takes a state and a collection of stacks to take args from. If there are enough args on each of the desired stacks, returns a map with keys {:state :args}, where :state is the new state and :args is a list of args popped from the stacks. If there aren’t enough args on the stacks, returns :not-enough-args without popping anything
peek-stack
(peek-stack state stack)Returns the top item on the stack
peek-stack-many
(peek-stack-many state stack n)Returns the top n items on the stack, as a chunk. If there are less than n items on the stack, returns the entire stack
pop-stack
(pop-stack state stack)Removes the top item of stack
pop-stack-many
(pop-stack-many state stack n)Pops the top n items of the stack. If there are less than n items on the stack, pops the entire stack
print-state
(print-state state)Pretty-print a Push state, for logging or debugging purposes
push-to-stack
(push-to-stack state stack item)Pushes an item onto the stack
push-to-stack-many
(push-to-stack-many state stack items)Pushes a collection of items onto the stack, as a chunk (i.e. leaving them in the order they are in)
stack-size
(stack-size state stack)Returns the stack size