I'm trying to figure out how to create a structure with multidimensional array.
I got it working for 1D array:
struct example1 {
var user: [String]
}
but when I try to create an array with String, String, Int and a Bool it gives me "Expected ']' in array type" error
struct example2 {
var user: [[String], [String], [Int],[Bool]]
}
How to create empty multidimensional array that would work in structure like mine?
Multiple arrays are bad practice for several reasons.
Create a struct User, each instance holds all information of one user
struct User {
let name : String
let email : String
let age : Int
let someBoolean : Bool
}
Declare the array
var users = [User]()
and add an item
let newUser = User(name: "Foo", email: "[email protected]", age: 12, someBoolean: false)
users.append(newUser)
Int, or String. If you want multiple types, then you need to use a more general type like a protocol or a superclass. The most general type is Any (which matches values of literally any type, be it Int, or String, or anything else), and you'll often see [Any], particularly working with unannoted Objective C APIs. The issue is that more general types achieve their generality by specificity less requirements. Any is a protocol with literally no requirements. ...Any. You can pass it around (such as to print, whose parameter has type Any), but that's about it. Doing anything useful at all with it requires you down cast it to the particular type, such as Int or String or whatever. For example, you can't do let x: Any = "Some string"; x.uppercased, because uppercased doesn't exist on Any. Using arrays of Any just devolves into needing to do casts all over the place, like (x as! String).uppercased. Structs solve this by allowing different types to coexist in a single struct.
structrather than multiple arrays.Userstruct, with properties you want (my guess is probablyfirstName: String,lastName: String,age: Intand some other boolean). You can then make an array ofUserstructs.