OC_04_01

int main(int argc, const char * argv[]) {
    @autoreleasepool {
       
        /*
         OC中封装,拆包基本数据类型
         Foundation框架下的基础类
         
         NSValue / NSNumber
         功能:将OC 和 C中的基本数据类型转换成实例对象,即将'值类型转'换成'引用类型'
         */
        
        //OC中常用的数据类型
        int a = 5;
        float b = 5.0;
        double c = 5.5;
        char d = 'a';
        bool flag = YES;
        
//        CGPoint point = {3,4};
//        CGSize size = {5,6};
//        CGRect rect = {point,size};
        
        //NSRange包含了两个成员,location 以及 length. location表示起始位置,以0开始,length表示长度
//        NSRange range = {10,3};
        
        CGPoint point = CGPointMake(3, 4);
        CGSize size = CGSizeMake(5, 6);
        CGRect rect = CGRectMake(3, 4, 5, 6);
        NSRange range = NSMakeRange(10, 3);
        NSEdgeInsets edgeInsets = NSEdgeInsetsMake(10, 10, 10, 10);
        
        //NSValue 以及 NSNumber
        //NSValue 为 NSNumber的父类
        //其中NSValue 可以将CGPoint,CGSize,CGRect,NSRange,NSEdgeInsets转换成对象
        NSValue *pointVa = [NSValue valueWithPoint:point];
        NSValue *sizeVa = [NSValue valueWithSize:size];
        NSValue *rectVa = [NSValue valueWithRect:rect];
        NSValue *rangeVa = [NSValue valueWithRange:range];
        NSValue *edgeInsetsVa = [NSValue valueWithEdgeInsets:edgeInsets];
        
        //其中NSNumber 可以将'int','float','double','char','bool'等C中基本数据类型转换成对象
        NSNumber *intNumber = [NSNumber numberWithInt:a];
        NSNumber *floatNumber = [NSNumber numberWithFloat:b];
        NSNumber *doubleNumber = [NSNumber numberWithDouble:c];
        NSNumber *charNumber = [NSNumber numberWithChar:d];
        NSNumber *boolNumber = [NSNumber numberWithBool:flag];
        
        
        //我们将C和OC中的基本数据类型(值类型)转换成对象(引用类型)的过程,叫做封装.相对应的也有一个将对象转变成基本数据类型,此过程叫做拆包.
        
        //拆包
        int a1 = [intNumber intValue];
        float b1 = [floatNumber floatValue];
        double c1 = [doubleNumber doubleValue];
        char d1 = [charNumber charValue];
        bool flag1 = [boolNumber boolValue];
        
        CGPoint point1 = [pointVa pointValue];
        CGSize size1 = [sizeVa sizeValue];
        CGRect rect1 = [rectVa rectValue];
        NSRange range1 = [rangeVa rangeValue];
        NSEdgeInsets edgeInsets1 = [edgeInsetsVa edgeInsetsValue];
        
        
        
        
    }
    return 0;
}