ios - 从字符串中获取单词列表

Question

我是 swift 的新手。我需要从前缀为 # 的字符串中获取单词列表。这是我的字符串

“在 6 月 14 日的火灾后，确认有 30 人死亡，但预计死亡总数会更高。......一名男子在#Facebook 上张贴了据信死者尸体的照片从#Grenfell Tower 跳楼身亡#fire 已被#jail 三个月"

我需要流动的单词列表:

["#Facebook","#Grenfell","#fire","#jailed"]

我花了很多时间但无法弄清楚如何实现这一目标。

Answer 1

您可以这样做:

 let str = "Thirty people are confirmed dead after the June 14 fire, but the total is expected to rise far higher. ... A man who posted pictures on #Facebook of the body of someone believed to have leapt to his death from the #Grenfell Tower #fire has been #jailed for three months"

 let words = str.components(separatedBy: " ").filter { (element) -> Bool in
         return element.hasPrefix("#")
    }
 print(words)