Ray's playground

摘要： In general, if you have an instance variable called x, including the following line inyour implementation section causes the compiler to automatically synthesize a gettermethod called x and a setter m... 阅读全文

摘要： This is because the conditionaloperator associates from right to left, meaning that multiple uses of this operatorin a single expression, such as in　　e1 ? e2 : e3 ? e4 : e5　　group from right to left a... 阅读全文