Foundation Kit

Foundation Kit

1.NSRange

   1:  typedef struct _NSRange

   2:   

   3:  {

   4:   

   5:      unsigned int location;

   6:   

   7:      usingned int length;

   8:   

   9:  }NSRange;

三种创建NSRange的方法：

   1:    1.NSRange range;

   2:   

   3:        range.location = 17;

   4:   

   5:        range.length = 4;

   6:   

   7:    2.NSRange range = {17,4};

   8:   

   9:    3.NSRange range = NSMakeRange(17,4);

2.NSPoint NSSize NSRect

   1:  typedef struct _NSPoint

   2:  {

   3:    float x;

   4:    float y;

   5:  }NSPoint;

   6:   

   7:  typedef struct _NSSize

   8:  {

   9:    float width;

  10:    float height;

  11:  }NSSize;

  12:   

  13:  typedef struct _NSRect

  14:  {

  15:    NSPoint origin;

  16:    NSSize size;

  17:  }NSRect;

创建方法:NSMakePoint();NSMakeSize();NSMakeRect();

//以上几个数据类型不是对象而是struct，原因是因为满足性能需求。

3.NSString NSMutableString

创建方法:

   1:  + (id)stringWithFormat:(NSString *)format, ...

   2:   

   3:  NSString *height;

   4:  height = [NSString initWithFormat:@"Your height is %d feet",5];

   5:   

创建方法:

   1:  NSMutableString *string;

   2:   

   3:  string = [NSMutableString stringWithCapacity:42];

4.NSArray NSMutableArray

用来存储Objective-C的对象，而不能存储C语言中的基本数据类型.

创建方法:

   1:  + (id)arrayWithObjects:(id)firstObj, ...

   2:   

   3:  NSArray *array;

   4:  array = [NSArray arrayWithObjects:@"one",@"two",@"three",nil];

5.NSEnumerator(Tiger系统)

   1:  NSEnumerator *enumerator

   2:  enumerator = [array objectEnumerator];

   3:   

   4:  id thingie;

   5:  while(thingie = [enumerator nextObject])

   6:  {

   7:      NSLog(@"i found %@",thingie);

   8:  }

5.1快速枚举

   1:  for(NSString *string in array)

   2:  {

   3:      NSLog(@"i found %@",string);

   4:  }

6.NSDictionary

创建方法：

+(id)dictionaryWithObjectAndKeys:(id)fristObject,...;

添加元素：

-(void)setObject:(id)anObject forkey:(id)akey;

(fuck!!写到这，windows live writer报错，后面写的都没保存…)

7.NSNumber

8.NSValue

9.NSNull