arrays - Swift 2.2 indexOf 用于数组中的结构部分

Question

我只是想找到包含结构中搜索项的结构数组的索引。类似这样:

struct Address{
    var name:String
    var town:String
}

var allAddresses = [Address]()
let newAddress = Address.init(name: "Paul", town: "Heidelberg")
allAddresses.append(newAddress)


//...
let found = allAddresses.name.indexOf("Paul")
//...

但是我明白了

error: value of type '[Address]' has no member 'name'

这在某种程度上是可能的吗？ 遍历数组会给我带来其他问题!

Answer 1

您必须在数组上调用 indexOf 并对谓词使用闭包语法:

let found = allAddresses.indexOf { $0.name == "Paul" }