如何在Swift中將字符串的每個單詞放入數組中？

Question

是否可以在Swift中將每個字符串放入數組中？

例如：

var str = "Hello, Playground!" 

到：

var arr = ["Hello","Playground"] 

謝謝:)

Answer 1

編輯/更新：

斯威夫特3.X

extension String { 
    var wordList: [String] { 
     return components(separatedBy: .punctuationCharacters) 
      .joined() 
      .components(separatedBy: .whitespaces) 
    } 
} 

SWIFT 2.1

​​

---

let myWordList = "Hello, Playground!".wordList // ["Hello", "Playground"] 

Answer 2

這最後溶液（來自LEO）將創建陣列中空元素當存在字符串中多個連續的空格。它還會合並用「 - 」分隔的單詞並將行尾字符處理爲單詞。

這一個不會：

extension String 
{  
    var wordList: [String] 
    { 
     return componentsSeparatedByCharactersInSet(NSCharacterSet.alphanumericCharacterSet().invertedSet).filter({$0 != ""}) 
    } 
} 

Answer 3

兩個答案目前與斯威夫特4，但下列可以覆蓋OP的問題&希望你的。

extension String { 
    var wordList: [String] { 
     return components(separatedBy: CharacterSet.alphanumerics.inverted).filter { !$0.isEmpty } 
    } 
} 

let string = "Hello, Playground!" 
let stringArray = string.wordList 
print(stringArray) // ["Hello", "Playground"] 

而且隨着用數字和一個雙空間更長的短語：

let biggerString = "Hello, Playground! This is a very long sentence with 123 and other stuff in it" 
let biggerStringArray = biggerString.wordList 
print(biggerStringArray) 
// ["Hello", "Playground", "This", "is", "a", "very", "long", "sentence", "with", "123", "and", "other", "stuff", "in", "it"]