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原创类和子类的一些例子

//关于类的示例 class Shape{//首字母大写 var numberOfSides = 0 func simpleDescription() -> String{ return"A shape with \(numberOfSides) sides." } } var shape = Shape()//注意编译器要求一定的编程

2014-11-07 18:08:05 477

原创 swift中for语句和函数示例

var firstForLoop = 0 for i in 0..4{//..不包含4，...4包含4 firstForLoop += i } firstForLoop var secondeForLoop = 0 for var i = 0; i 4; ++i{//注意这里无法更换i++ secondeForLoop += i } secondeFo

2014-11-07 18:06:43 411

原创 swift教程－数组

//元组tuples let tuples = ( x : 0, y : 1) tuples.x tuples.y tuples.1 let (h, _) = tuples//忽略型元组分解 h var testValus: Int? = 404 //可选值示范，如果不对teatValus操作，那么默认就是404 if let testNum = testV

2014-11-07 18:06:10 317

原创 swift中的函数用法，嵌套函数和返回一个函数以及函数作为参数，闭包

func calculateStatistics(scores: [Int]) ->(min:Int,max:Int,sum:Int){//[int]表示接收数组 var min = scores[0] var max = scores[0] var sum = 0 for score in scores{ if score

2014-11-07 18:05:41 357

原创 Sqlite3数据库api使用记录

SQLITE_API int sqlite3_open_v2( const char *filename, /* Database filename (UTF-8) */文件路径名称 sqlite3 **ppDb, /* OUT: SQLite db handle */ int flags, /* Flags */ SQLIT

2014-11-03 22:44:28 387

原创一些控件的使用以及本地化的操作和注意事项

//view 切换动画 [UIViewbeginAnimations:nilcontext:nil]; [UIViewsetAnimationDuration:1.25]; [UIViewsetAnimationCurve:UIViewAnimationCurveEaseOut]; [UIViewsetAnimationTransition:UIViewAn

2014-11-03 22:41:51 271

原创文件的读写

文件的写入 NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSLog(@"paths%@",paths); NSString *docDir = [paths objectAtIndex: 0]; i

2014-11-03 22:41:20 268

原创 NSData缓存的使用

NSString *fileName = @"testFileNSFileMangager.txt"; NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES); NSString *documentsDirectory = [pat

2014-11-03 22:41:13 426

原创取得程序的真实目录

NSString *homeDirectory = NSHomeDirectory();//程序的home目录 NSLog(@"path:%@", homeDirectory); NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask,

2014-11-03 22:40:07 269

原创词典用法和数组排序

NSMutableDictionary *glossary = [NSMutableDictionary dictionary];//创建了一个空的可变词典 NSDictionary *glossary = [NSDictionary dictionaryWithObjectsAndKeys://不可变词典以及快速枚举词典的方式词典是无序的

2014-11-03 22:38:24 267

原创 NSArray 的使用例子

int i; NSArray *monthNames = [NSArrayarrayWithObjects:@"January",@"February",@"Macrch",@"April",@"May", @"June",@"July",@"August",@"September",@"October",@"November",@"December", nil]; //初始

2014-11-03 22:37:18 275

原创 Nsstring的增删改查

NSString *str1 = @"This is string A"; NSString *str2 = @"This is string b"; NSString *res; NSComparisonResult compareResult;//声明保存字符串比较操作的结果 NSLog(@"Length of str1: %lu",(

2014-11-03 22:36:38 319