过滤字符串数组,包括"喜欢"条件

Question

如果我的主阵列是["Hello","Bye","Halo"],并且我正在搜索"lo",它将仅过滤数组["Hello", "Halo"].

这就是我尝试过的:

 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？

Answer 1

contains改为使用:

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

产量

["你好","光环"]

感谢@ user3441734指出该功能当然仅在您使用时可用 import Foundation

Answer 2

在Swift 3.0中

let terms = ["Hello","Bye","Halo"]

var filterdTerms = [String]()


func filterContentForSearchText(searchText: String) {
    filterdTerms = terms.filter { term in
        return term.lowercased().contains(searchText.lowercased())
    }
}


filterContentForSearchText(searchText: "Lo")
print(filterdTerms)

产量

["Hello", "Halo"]

Answer 3

斯威夫特3.1

let catalogNames = [ "Hats", "Coats", "Trousers" ]
let searchCatalogName = "Hats"

let filteredCatalogNames = catalogNames.filter { catalogName in 
    return catalogName.localizedCaseInsensitiveContains(searchCatalogName)
}

print(filteredCatalogNames)