摘要： 实例化： t = Thread() t = Thread(block: <#T##() -> Void#>) t = Thread(target: <#T##Any#>, selector: <#T##Selector#>, object: <#T##Any?#>) t = Thread.detac 阅读全文

摘要： Cannot use instance member 'a' within property initializer; property initializers run before 'self' is available 报错信息说得很明白。 属性a 想使用 属性b 来初始化赋值，那么得等sel 阅读全文