Remove and return the topmost element on the stack.
Remove and return the topmost element on the stack. If the stack is empty, return a reference to a negative index on the stack, meaning it refers to elements pushed by a predecessor block.
(simulatedStack: StringAdd).self
(simulatedStack: StringFormat).self
(simulatedStack: ArrowAssoc[SimulatedStack]).x
(Since version 2.10.0) Use leftOfArrow
instead
(simulatedStack: Ensuring[SimulatedStack]).x
(Since version 2.10.0) Use resultOfEnsuring
instead