字符串集的UITextChecker -SWIFT4.2

Question

由于@Leo，我现在拥有这个Extension。它对单个String非常有效，但是我如何将相同的逻辑实现到Set of Strings (如var mySet = ["word", "notaword", "stillnotaword"] )。在本例中，我希望函数只将第一个index标识为true (即一个英文单词)。

extension String {
    public mutating func isEnglishWord() -> Bool {
        return UITextChecker().rangeOfMisspelledWord(in: self, range: NSRange(location: 0, length: utf16.count), startingAt: 0, wrap: false, language: "en_US").location == NSNotFound
    }
}

var myString = "word"

myString.isEnglishWord()

Answer 1

let words = ["word", "notaword", "stillnotaword"]

let validWords = words.filter { word -> Bool in
    return word.isEnglishWord()
}

let wordsArray : NSArray = NSArray(array: words)
let validWordsIndexes = wordsArray.indexesOfObjects { (word, index, _) -> Bool in
    return (word as! String).isEnglishWord()
}

print(validWords)
print(validWordsIndexes)

extension String {
    public func isEnglishWord() -> Bool {
        return UITextChecker().rangeOfMisspelledWord(in: self, range: NSRange(location: 0, length: utf16.count), startingAt: 0, wrap: false, language: "en_US").location == NSNotFound
    }
}

我添加了打印有效单词和有效单词索引的代码。你可以选择适合你的。谢谢