WebDiscussion. This method defines what it means for instances to be equal. For example, a container object might define two containers as equal if their corresponding objects all respond YES to an is Equal: request. See the NSData, NSDictionary, NSArray, and NSString class specifications for examples of the use of this method.. If two objects are … Webhash方法只有在对象被添加到NSSet和设置为NSDictionary的key时会被调用. NSSet添加新成员是需要根据hash值来快速查找成员,以保证集合中是否已经存在该成员。 …
iOS开发 之 不要告诉我你真的懂isEqual与hash! - 简书
Web1 jul. 2011 · this is how you implement hash and isEqual (at-least the one which is working for me for purpose of identifying duplicates) Hash Function. The Apple Doc says that the … Web¿Por qué existe un método hash? Esta pregunta comienza con la estructura de datos de Hash Table Primero, veamos cómo encontrar un miembro en la matriz Paso 1: atraviesa los miembros de la matriz Paso 2: Compare el valor recuperado con el valor objetivo, si son iguales, devuelva el miembro download registered data recovery software
NSObject子类重写isEqual:函数和hash函数实践 - 掘金
Web15 jan. 2013 · You would create the hash value based on title alone completely ignoring date and dateString. - (NSUInteger)hash { return self.title.hash } This will ensure that … Web14 okt. 2013 · The hash and isEqual methods will both return true for two objects, but containsObject will return false. Sometimes this code works and sometimes it doesn't. … Web26 feb. 2024 · 一、iOS hash. 下图列出 Hash 在 iOS 中的应用分析整理. 知乎上的一句话: 算法、数据结构、通信协议、文件系统、驱动等,虽然自己不写那些东西,但是了解其原理对于排错、优化自己的代码有很大帮助,就好比虽然你不设计制造汽车,但如果你了解发动机、变速器、安全气囊等几项原理,对于你驾车 ... class index-h2 mt-4