1、处理内存不足的接口:didReceiveMemoryWarning
//处理内存不足的接口:内存不足时,调用到此方法
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()//ios6.0以上调用didReceiveMemoryWarning内调用super的didReceiveMemoryWarning调只是释放controller的resouse,不会释放view
// Dispose of any resources that can be recreated.
print("内存不足时将会执行此代码")
}
2、let 是声明常量;var是声明变量。
let name = "林俊杰"
let age = 22
print("姓名:",name,"\n年龄:",age)
3、类型转换
//Int转换为String
let count : Int = 100
let num : String = String(count)
print(num+"分")
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