iOS - OC NSSet 集合
前言NSSet:集合@interface NSSet<__covariant ObjectType> : NSObject <NSCopying, NSMutableCopying, NSSecureCoding, NSFastEnumeration>@interface N...
OC NSSet
OC NSSet数组的特点: 有序的Set的特点: 无序的,存储元素无重复(例:set中有两个元素'a' 输出时只输出一个a)NSSet初始化NSSet * set = [[NSSet alloc] initWithObjects:@"a",@"b",@"c", nil];NSSet * set1 ...
Fouandation(NSString ,NSArray,NSDictionary,NSSet) 中常见的理解错误区
Fouandation 中常见的理解错误区 1.NSString //快速创建(实例和类方法) 存放的地址是 常量区 NSString * string1 = [NSString alloc]initWithString:@“123”]; NSString * string3 = [NSS...
对NSSet排序最有效的方法是什么?
What's the most efficient way to sort objects in an NSSet/NSMutableSet based on a property of the objects in the set? Right now the way I am doing it ...
Swift:为类类型过滤NSSet
In objective-C I had this function to filter an NSSet for an array of class types: 在objective-C中,我有这个函数来过滤一个类类型数组的NSSet: + (NSSet *)filterSubjectsSet:...
Foundation框架之NSArray、NSDictionary、NSSet及其Mutable类型
Foundation框架之NSArray、NSDictionary、NSSet及其Mutable类型目录概述——对Foundation框架集合类的理解NSArrayNSDictionaryNSSetNSArray、NSDictionary和NSSet的Mutable类型Foundation框架中集合...
将NSMutableArray转换为具有相同顺序的NSSet
How can I do that programatically? 我怎样才能程序化地做到这一点呢? I am told that this is the way to do it but the NSSet has a different order. 我被告知这是一种方法但是NSSet有不同的...
Why is this piece of code so slow? (CoreData & NSSet)
I have an app and I'm implementing full text search. I have 2 enitites: Keywords and Articles with a many-to-many relationship between them. The probl...
瞬态可选NSSet崩溃,出现EXC_BAD_ACCESS错误
I have a transient optional attribute addedImages in Swift as part of an one-to-many relationship within a managed object with the attribute and the a...
如何将NSArray中的对象放入NSSet?
I have some NSDictionary objects stored in an NSArray called telephoneArray. I fetch the values for the key number and then replace the NSDictionary I...
OC语法<4.4> Foundation框架中的集合类-NSSet
一:NSSet 集合: ...
黑马程序员--ios基础--oc-foundation--NSSet、NSDictionary、NSNumber、NSValue、NSDate
------Java培训、Android培训、iOS培训、.Net培训、期待与您交流! ------- - NSSet1、集合:集合(NSSet)和数组(NSArray)有相似之处,都是存储不同的对象的地址;不过NSArray是有序的集合,NSSet是无序的集合。集合是一种哈希表,运用散列算法,查找...
iOS遍历集合(NSArray、NSDictionary、NSSet)的方法总结
这篇文章主要介绍了iOS集合遍历(NSArray、NSDictionary、NSSet)的方法,文中给出了详细的方法示例,并总结了各个方法的优缺点来供大家学习参考,需要的朋友们下面来一起看看吧。
如何在UITableView中显示NSSet?
How would you proceed to display the content of an NSSet in a UITableView? 您将如何继续在UITableView中显示NSSet的内容? As you know, the table view will ask for the...
从NSSet获取对象
If you can't get an object with objectAtIndex: from an NSSet then how do you retrieve objects? 如果您无法从NSSet中获取对象,那么如何检索对象呢?7 个解决方案 ...
NSSet所有API学习。
/****************集合(NSSet)和数组(NSArray)有相似之处,都是存储不同的对象的地址。只是NSArray是有序的集合,NSSet是无序的集合,同一时候NSSet能够保证数据的唯一性。当插入同样的数据时,不会有不论什么效果。集合是一种哈希表,运用散列算法。查找集合中的元素比...
[翻译] 用 ObjectiveSugar 扩展NSArray NSDictionary NSSet NSNumber
source - https://github.com/supermarin/ObjectiveSugarLook like a girl, act like a lady, think like a man, work like a boss.外表如萝莉,举止赛淑女,思想堪汉子,工作比老板。A s...
OC NSArray练习题 和 NSSet的常用方法
#import <Foundation/Foundation.h> #import "Book.h" int main(int argc, const char * argv[]) { NSMutableArray *book = [NSMutableArr...
NSSet的containsObject:测试指针相等或值相等吗?
Say I have an NSSet with a string in it. If I send containsObject: with another string which is a different pointer but the exact same string value, w...
Objective-C基础数据类型-NSSet[转]
转自GISerYang集合:集合(NSSet)和数组(NSArray)有相似之处,都是存储不同的对象的地址;不过NSArray是有序的集合,NSSet是无序的集合。集合是一种哈希表,运用散列算法,查找集合中的元素比数组速度更快,但是它没有顺序。1 NSSet * set = [[NSSet allo...