目录场景 1:不为 null 则执行场景 2:不为 null 则返回,为 null 则返回特定值或抛出异常场景 3:不为 null 则返回,为 null 则由调用方法场景 4:嵌套 null 检查总结假设我们有一个学生对象,以及这个学生对象的 O
Basically I want two mix two colours color1 and color2. Since simple calculation\'s bring up stuff like blue+yellow = grey ((color1.r + color2.r)/2 etc) i did some research and found that apparently m