Objective-C 中的 NSString 标记化

使用Objective-C中的NSString标记化可以方便地处理文本数据。标记化是将文本分解成单词、句子或其他语言单位的过程，这样我们可以更好地处理和分析文本数据。在本文中，我们将讨论如何使用Objective-C中的NSString标记化，并提供一些实例代码来帮助理解。

objective-c
NSString *text = @"Hello World! This is a sample text.";
NSCharacterSet *separators = [NSCharacterSet whitespaceAndNewlineCharacterSet];
NSArray *words = [text componentsSeparatedByCharactersInSet:separators];
for (NSString *word in words) {
    NSLog(@"%@", word);
}

objective-c
NSString *text = @"Hello. How are you? I'm fine, thank you!";
NSArray *sentences = [text componentsSeparatedByString:@"."];
for (NSString *sentence in sentences) {
    NSLog(@"%@", sentence);
}

objective-c
NSString *text = @"Hello! My phone number is 123-456-7890.";
NSString *pattern = @"\\b\\w+\\b";
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:pattern options:0 error:nil];
NSArray *matches = [regex matchesInString:text options:0 range:NSMakeRange(0, text.length)];
for (NSTextCheckingResult *match in matches) {
    NSString *unit = [text substringWithRange:match.range];
    NSLog(@"%@", unit);
}