Since its launch in 2008, Stack Overflow has become a crucial source for development help. The company behind the site--also called Stack Overflow 1--boasts that 40 million developers visit Stack ...

To pop (or delete) an item from a stack, use the POPN, POPC, POPL, or POPO function. You can use the ITEMTYPE function to determine the type of the item at the top of the stack if your application ...