一、Spring中相关概念
1.IOC 控制反转
IoC(Inverse of Control:控制反转)是⼀种设计思想,就是将原本在程序中⼿动创建对象的控制权,交由Spring框架来管理。IoC 在其他语⾔中也有应⽤,并⾮ Spring 所独有。
IoC 容器…
题目: An adder-subtractor can be built from an adder by optionally negating one of the inputs, which is equivalent to inverting the input then adding 1. The net result is a circuit that can do two operations: (a b 0) and (a ~b 1). See Wikipe…