Swift - Select a specific value within an array of multiple key/values

Question

I have an array called [images]. Within this array, there is the ID of each image, and the URL of each image. I wish to put only the URL (not the ID) of the selected image into a variable to be used elsewhere.

For example, when I print my entire array:

print(images)

I get the following:

[(id: "nni", URL: "https://bbc.com/a1.jpg"), (id: "9hr", URL: "https://bbc.com/a2.jpg")]

I am able to successfully isolate the selected image using the following

print(images[indexPath.row)

So, if I click on the first image, this print statement will return:

[(id: "nni", URL: "https://bbc.com/a1.jpg")] // This is correct

However, I ONLY want to isolate that URL, and put it into a new variable, selectedURL

selectedURL = "https://bbc.com/a1.jpg"

How can I do this?

Possible duplicate of Swift: Get an element from a tuple

ielyamani
– ielyamani

2019-04-23 23:33:08 +00:00
Commented Apr 23, 2019 at 23:33 — ielyamani
– ielyamani, Commented Apr 23, 2019 at 23:33

rmaddy · Accepted Answer · 2019-04-23 23:31:34Z

2

It looks like you have an array of tuples (not the best choice).

Do:

let selectedURL = images[indexPath.row].URL

or:

let selectedURL = images[indexPath.row].1

But consider creating a struct with id and URL fields.

answered Apr 23, 2019 at 23:31

rmaddy

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2 Comments

chuckbass Over a year ago

Thanks - what makes the struct a better choice?

rmaddy Over a year ago

A struct is clear. It can have initializers and methods. It's easier to pass around.

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