如何在Swift中创建具有多个变量的数组

Question

I am new to iOS development, and for some reason I can't figure out how to do this even though I realize it has to be simple. I want to create a collection with 2 string values. For instance:

var firstName = "Bob"
var lastName = "Smith"

So the first index would contain ("Bob", "Smith") and so one for each first and last name I want to add to the collection. What object do I use? I tried a dictionary but it seems you have to add your values to that up front, and I need to add my later on programmatically.

Answer 1

You could use a dictionary but I'd create a Person struct that contains a firstName and a lastName and put those into an array.

struct Person {
    var firstName: String
    var lastName: String
}

var firstName = "Bob"
var lastName = "Smith"

var array = [Person(firstName: firstName, lastName: lastName)]

It also has the benefit of being able to access the parts using .firstName and .lastName

array[0].firstName

As opposed to a dictionary that that requires a string

array[0]["firstName"]

Answer 2

To create an array with only string you use

var shoppingList: [String] = ["Eggs", "Milk"]

And to add to the end of the array (push) you use

shoppingList.append("Bread")

Answer 3

首选struct方法，但是如果您想做一些与初始请求更类似的事情，则可以做一个元组数组