YKFile的所有功能都在这里！如何使用：请自己读取源代码。

@property(nonatomic, copy) NSString *fullPath; @property(nonatomic, strong, readonly) NSString *name; @property(nonatomic, strong, readonly) NSString *extension; @property(nonatomic, strong, readonly) NSString *parentName; @property(nonatomic, strong, readonly) NSArray *pathComponents; @property(nonatomic, assign, readonly) BOOL exists; @property(nonatomic, assign, readonly) BOOL isFile; @property(nonatomic, assign, readonly) BOOL isEmptyDirectory; @property(nonatomic, assign, readonly) BOOL isDirectory; @property(nonatomic, assign, readonly) BOOL isHidden; @property(nonatomic, assign, readonly) NSInteger depth;

• (instancetype)fileWithPath:(NSString *)fullPath;
• (instancetype)initWithPath:(NSString *)fullPath;
• (instancetype)fileWithAppending:(NSString *)path;
• (YKFileArray *)filesWithAppending:(NSArray *)paths;
• (instancetype)parentFile;
• (void)changeDirectory:(NSString *)path;
• (BOOL)makeDirectory;
• (BOOL)makeDirectories;
• (Boolean)makeDirectory:(NSString *)dirName;
• (BOOL)makeDirectories:(NSString *)dirName;
• (BOOL)remove;
• (BOOL)remove:(NSString *)name;
• (BOOL)copyTo:(YKFile *)destination;
• (BOOL)moveTo:(YKFile *)destination;
• (NSArray *)list;
• (YKFileArray *)listFiles;
• (YKFileArray *)listRecursively:(BOOL)recursively files:(BOOL)includeFiles directories:(BOOL)includeDirs;
• (NSString *)cropPathFromDepth:(NSInteger)from toDepth:(NSInteger)to;
• (NSString *)cropPathFromDepth:(NSInteger)from;
• (NSString *)cropPathToDepth:(NSInteger)to;
• (NSString *)cropPathFromTail:(NSInteger)numOfComponents;
• (NSString *)pathComponentFromTail:(NSInteger)whatTh;
• (NSComparisonResult)compare:(YKFile *)file pathFromDepth:(NSInteger)from toDepth:(NSInteger)to;
• (NSComparisonResult)compare:(YKFile *)file pathFromDepth:(NSInteger)from;
• (NSComparisonResult)compare:(YKFile *)file pathToDepth:(NSInteger)to;
• (NSComparisonResult)compare:(YKFile *)file pathFromTail:(int)numOfComponents;
• (NSComparisonResult)compareWithName:(YKFile *)file;
• (NSString *)text;
• (NSURL *)url;
• (void)cd:(NSString *)path;
• (void)cd;
• (BOOL)mkdir:(NSString *)dirName;
• (BOOL)mkdirs:(NSString *)dirName;
• (BOOL)mkdir;
• (BOOL)mkdirs;
• (BOOL)rm:(NSString *)name;
• (BOOL)rm;
• (BOOL)cp:(YKFile *)destination;
• (BOOL)mv:(YKFile *)destination;
• (BOOL)isInSameDirectoryAs:(YKFile *)file;