如何搜索[[String]]類型的字符串或字符

Question

//Am not getting any search list of cells
//when am searching am getting empty array every time.

var actors = [["a0","b0","c0","d0"],["a1","b1","c1","d1"],["a2","b2","c2","d2"],["a3","b3","c3","d3"]]

var filterArr:[[String]] = []

func updateSearchResults(for searchController: UISearchController) {        
    print("Searching for text:----\(searchController.searchBar.text!)")

    let predicate = NSPredicate(format: "SELF Contains[c] %@" , searchController.searchBar.text!)

    filterArr = (actors as NSArray).filtered(using: predicate) as! [[String]]
    print(filterArr)

}

Answer 1

當你不需要時，不要使用NSPredicate和NSArray類的Objective-C。 使用Swift的filter和map 。

根據您在注釋中描述的內容，您只想保留包含搜索文本的內部數組。 你可以這樣做：

filterArr = actors.filter { $0.contains(searchController.searchBar.text!) }

如果只想保留包含包含搜索文本的項的內部數組，請執行以下操作：

filterArr = actors.filter { $0.contains { $0.contains(searchController.searchBar.text!) } }