使用未声明的类型NSLinguisticTagScheme

Question

I have the code working in a playground, and Xcode shows no bugs, but when I compile the file on the command line it comes back with the errors

use of undeclared type NSLinguisticTagScheme
and String has no member 'tokenType'

Heres the problem code.

let tagSchemes : [NSLinguisticTagScheme] = [ .tokenType]
let tagger : NSLinguisticTagger = NSLinguisticTagger(tagSchemes: tagSchemes, options: 0)
let options : NSLinguisticTagger.Options = [ .omitPunctuation, .omitWhitespace]

tagger.string = text
let range = NSRange(location: 0, length: text.utf16.count)

tagger.enumerateTags( in: range, unit: .sentence, scheme: .tokenType, options: options, using: 
{ tag, tokenRange, stop in
    let token = (text as NSString).substring(with: tokenRange)
    sentences.append(token)
})

Any ideas?

Answer 1

更新Xcode解决了该问题