【Foundation-26-1】#import <Foundation/NSDictionary.h>字典，旧

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@interface NSDictionary :NSObject <NSCopying,NSMutableCopying,NSSecureCoding,NSFastEnumeration>

简单使用

@property (readonly)NSUInteger count;

- (id)objectForKey:(id)aKey;

- (instancetype)init NS_DESIGNATED_INITIALIZER;

 NSDictionary *dic1 = @{@"k1":@"v1",@"k2":@"v2"};        NSDictionary *dic2 = [[NSDictionary alloc]init];        NSInteger count = dic1.count;    NSLog(@"%ld",count);        NSString *str = [dic1 objectForKey:@"k1"];    NSLog(@"%@",str);

阿西吧

- (NSEnumerator *)keyEnumerator;

初始化

#if TARGET_OS_WIN32

- (instancetype)initWithObjects:(constid [])objects forKeys:(constid [])keys count:(NSUInteger)cnt;

#else

- (instancetype)initWithObjects:(constid [])objects forKeys:(constid <NSCopying> [])keys count:(NSUInteger)cntNS_DESIGNATED_INITIALIZER;

#endif

#if TARGET_OS_WIN32

+ (instancetype)dictionaryWithObjects:(constid [])objects forKeys:(constid [])keys count:(NSUInteger)cnt;

#else

+ (instancetype)dictionaryWithObjects:(constid [])objects forKeys:(constid <NSCopying> [])keys count:(NSUInteger)cnt;

#endif

通过解码获得，阿西吧

- (instancetype)initWithCoder:(NSCoder *)aDecoderNS_DESIGNATED_INITIALIZER;

@end

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