NSStringCompareOptions 与 NSDiacriticInsensitiveSearch；

发布于 2024-11-06 18:05:19 字数 682 浏览 2 评论 0原文

我正在尝试比较两个字符串

String1 来自文件。
String2 在 NSArray （预定义列表）中，

我想比较这两个字符串，如果匹配，可能会执行 NSLog

NSStringCompareOptions compareOptions = NSDiacriticInsensitiveSearch;
NSArray* countryIndex = [[NSArray alloc] initWithObjects:@"alpha",
                                                         @"beta",
                                                         @"gamma",
                                                         nil];

for (NSString* element in countryIndex) {
    NSComparisonResult result = [(NSString *)country compare:element options:compareOptions];
}

所以我很困惑结果是什么？（数量、类别等）

原文

I am trying to compare two strings

String1 is from a file.
String2 is in an NSArray (predefined list)

I want to compare the two strings and if it's a match, maybe do an NSLog

NSStringCompareOptions compareOptions = NSDiacriticInsensitiveSearch;
NSArray* countryIndex = [[NSArray alloc] initWithObjects:@"alpha",
                                                         @"beta",
                                                         @"gamma",
                                                         nil];

for (NSString* element in countryIndex) {
    NSComparisonResult result = [(NSString *)country compare:element options:compareOptions];
}

So I'm very confused at what result is? (number, class, etc)

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

小草泠泠 2024-11-13 18:05:19

请在此处查看 Apple 文档。

如果您搜索“NSComparisonResult”，您将看到它是一个枚举，其中包含可用于检查比较操作结果的常量。

以下是链接文档中的一个简短片段：

NSComparisonResult
These constants are used to indicate how items in a request are ordered.

enum {
   NSOrderedAscending = -1,
   NSOrderedSame,
   NSOrderedDescending
};
typedef NSInteger NSComparisonResult;

例如，为了在您的代码你可以执行以下操作：

NSStringCompareOptions  compareOptions = NSDiacriticInsensitiveSearch;
NSArray* countryIndex = [[NSArray alloc] initWithObjects:@"alpha", @"beta", @"gamma' nil];

for (NSString* element in countryIndex) {
    NSInteger result = [(NSString *)country compare:element options:compareOptions];
    if(NSOrderedAscending == result) {
        // Do something here...
    }
    else if (NSOrderedSame == result) {
        // Do another thing here if they match...
    }
    else {
        // Try something else...
    }
}

Check the Apple documentation available here.

If you do a search for 'NSComparisonResult' you will see it's an enum, containing constants you can use to check what the comparison operation resulted in.

Here's a brief snippet from the linked document:

NSComparisonResult
These constants are used to indicate how items in a request are ordered.

enum {
   NSOrderedAscending = -1,
   NSOrderedSame,
   NSOrderedDescending
};
typedef NSInteger NSComparisonResult;

So for instance, in order to use it in your code you could do the following:

NSStringCompareOptions  compareOptions = NSDiacriticInsensitiveSearch;
NSArray* countryIndex = [[NSArray alloc] initWithObjects:@"alpha", @"beta", @"gamma' nil];

for (NSString* element in countryIndex) {
    NSInteger result = [(NSString *)country compare:element options:compareOptions];
    if(NSOrderedAscending == result) {
        // Do something here...
    }
    else if (NSOrderedSame == result) {
        // Do another thing here if they match...
    }
    else {
        // Try something else...
    }
}

回复收藏 0 原文

~没有更多了~