## Objective-C KVC 自动转换类型研究
apple很厚道,kvc的时候帮我们做了一些类型转换,规律贴出来,给大伙参考参考
@interface Entity : NSObject
@property (nonatomic, copy) NSString *str;
@property (nonatomic, assign) int i1;
@property (nonatomic, assign) int i2;
@property (nonatomic, assign) int i3;
@property (nonatomic, assign) float f1;
@property (nonatomic, strong) NSNumber *num;
@property (nonatomic, assign) BOOL b1;
@property (nonatomic, assign) BOOL b2;
@property (nonatomic, assign) B......
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