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问题描述

如果我的主数组是 ["Hello","Bye","Halo"],并且我正在搜索 "lo",它将过滤数组仅用于["Hello", "Halo"].

If my main array is ["Hello","Bye","Halo"], and I'm searching for "lo", it will filter the array only to ["Hello", "Halo"].

这是我试过的:

 let matchingTerms = filter(catalogNames) {
        $0.rangeOfString(self.txtField.text!, options: .CaseInsensitiveSearch) !=  nil
    }

它抛出

Type of expression is ambiguous without more context

有什么建议吗?

推荐答案

使用 contains 代替:

let arr = ["Hello","Bye","Halo"]
let filtered = arr.filter { $0.contains("lo") }
print(filtered)

输出

["你好", "光环"]

感谢@user3441734 指出该功能当然只有在您import Foundation

Thanks to @user3441734 for pointing out that functionality is of course only available when you import Foundation

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10-12 12:31