Detect Language of NSString

Question

Somebody told me about a class for language recognition in Cocoa. Does anybody know which one it is?

This is not working:

NSSpellCh         


        

Answer 1

As of iOS 11 you can use the dominantLanguage(for:)/dominantLanguageForString: class method of NSLinguisticTagger.

Swift:

extension String {
    var language: String? {
        return NSLinguisticTagger.dominantLanguage(for: self)
    }
}

print("Good morning".language)
print("Buenos días".language)

Objective-C:

@interface NSString (Tagger)

@property (nonatomic, readonly, nullable) NSString *language;
@end

@implementation NSString (Tagger)

- (NSString *)language {
    return [NSLinguisticTagger dominantLanguageForString:self];
}

@end

NSLog(@"%@", @"Good morning".language);
NSLog(@"%@", @"Buenos días".language);

Output (for both):

en
es