Swift字符串过滤器数组 [英] Swift filter array of strings

问题描述

我在快速过滤关键字(字符串)数组时遇到麻烦，我的代码:

I've had troubles filtering array of keywords (strings) in swift ,My code:

self.filteredKeywords=filter(keywords.allValues, {(keyword:NSString) ->                                              
  Bool in
    let words=keyword as? NSString
    return words?.containsString(searchText)
  })

由于AnyObject不能是NSString的子类型，所以我被困住了！

As AnyObject can't be subtype of NSString, I'm stuck with this!

推荐答案

Swift 4.2提供了一种新的方法:

Swift 4.2 provides a new way to do this:

var theBigLebowski = ["The Dude", "Angry Walter", "Maude Lebowski", "Donny Kerabatsos", "The Big Lebowski", "Little Larry Sellers"]

// after removeAll -> ["The Dude", "Angry Walter", "Donny Kerabatsos", "Little Larry Sellers"]
theBigLebowski.removeAll{ $0.contains("Lebowski")}
print(theBigLebowski)

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