List!(int) list = List!(int).build(10, 20, 30); assert(list.length == 3); assert(list.popBack == 30); assert(list.length == 2); assert(list.popBack == 20); assert(list.length == 1); assert(list.popBack == 10); assert(list.empty); assert(list.popBack(int.init) == int.init); assert(list.empty); assert(list.popBack(42) == 42); assert(list.empty);
Pop the last element of the bidirectional list, effectively reducing its length by 1.
Return erased element.