Accessing an array by string value

Question

I have two type of arrays: one for storage the category name:

struct Category {
    var title : String
    var dataArrayName : String
}

var Categories = [
    Category(title: "First Title", dataArrayName: "firstDataArray"),
    Category(title: "Second Title", dataArrayName: "secondDataArray")
]

and another one for storage the category data:

var firstDataArray = [1, 2, 3, 4, 5] // Data Array 1
var secondDataArray = [6, 7, 8, 9, 10] // Data Array 2

Then, in tableView didSelectRowAt indexPath I want to access firstDataArray by dataArrayName from Categories (to push the data array to another View Controller).

I get value of dataArrayName via line Categories[indexPath.row].dataArrayName but I don't know how to access array because I get a String result.

Thiago Soares · Accepted Answer · 2020-04-26 13:44:45Z

2

I think that you could set a "dataArrayName" with the data [Int]. Because, when you set the Array Data Before the categories, you can access this var like this:

struct Category {
    var title : String
    var dataArrayName : [Int]
}

var firstDataArray = [1, 2, 3, 4, 5] // Data Array 1
var secondDataArray = [6, 7, 8, 9, 10] // Data Array 2

var categories = [
    Category(title: "First Title", dataArrayName: firstDataArray),
    Category(title: "Second Title", dataArrayName: secondDataArray)
]

answered Apr 26, 2020 at 13:44

Thiago Soares

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Comments

krbiz · Accepted Answer · 2020-04-26 13:50:54Z

1

You probably should access to arrayData not by name, it's very bad practice in programming. Instead of it use instance of Array, like this:

struct Category {
    var title : String
    var dataArray : [Int]
}

var firstDataArray = [1, 2, 3, 4, 5] // Data Array 1
var secondDataArray = [6, 7, 8, 9, 10] // Data Array 2

var categories = [
    Category(title: "First Title", dataArray: firstDataArray),
    Category(title: "Second Title", dataArray: secondDataArray)
]

And finally access to the arrayData:

print(categories[indexPath.row].dataArray)

answered Apr 26, 2020 at 13:50

krbiz

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