在数组数组中查找值

Question

我有以下格式的数组

var persons : [[String]] = []

let blah : [String] = [title, firstName, lastName, address1, town, postCode]

persons.append(blah)

给出如下输出：

[
   ["Mr", "Joe", "Bloggs", "999 Letsbe Avenue", "Townsville", "TS12 9UY"],
   ["Mr", "Peter", "Smith", "999 Underavest", "CityVille", "OP19 1IK"]
]

我想进行搜索以查找“史密斯”的首次出现，但是我对如何做到这一点感到困惑。

有什么帮助吗？

Answer 1

你可以试试

if let index = persons.index(where:{ $0.contains("Smith")  }) { 
     print(index)  
}

顺便说一句，最好有

 struct Person {
    let fname,lname,address:String
 }

Answer 2

你可以做这样的事情

let array = [
       ["Mr", "Joe", "Bloggs", "999 Letsbe Avenue", "Townsville", "TS12 9UY"],
       ["Mr", "Peter", "Smith", "999 Underavest", "CityVille", "OP19 1IK"]
    ]

    var index = array.flatMap { $0 }.firstIndex(of: "Smith")
    print("\(index!/5)")
     index = array.flatMap { $0 }.firstIndex(of: "Bloggs")
    print("\(index!/5)")

我花了5个来查找索引，因为每个数组中有5个条目。