let username : String = "llll";
let screnname : String;
if let username = username{
screnname = username;
// print(screnname);
}
else{
screnname = "gggg";
}
这个分明是错的,,,欺骗小白啊
let screnname : String;
if let username = username{
screnname = username;
// print(screnname);
}
else{
screnname = "gggg";
}
这个分明是错的,,,欺骗小白啊
2016-11-24
functional progarmming fullstack Lambda oop ooc oc protocol stuct class