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iOS

Posted by Chris Ediger
Chris Ediger
1,965 Points

Can't figure out how to append to an array (within a struct)

I'm completely stuck. I'm working on building an iOS app in Swift based on some Treehouse courses I've completed. I need to define an array of tools within a struct, but if I include any more than 4 items Xcode gets stuck indexing.

Found the solution here: http://stackoverflow.com/a/27531394. I can't figure out how to append to the array, however. When I attempt to do the code below, I get the following error: "Expected declaration". Any ideas?

import Foundation

struct Toolkit {
    var tools = [ [
        "name": "Know Yourself to Lead Yourself",
        "shape": "icon_knowyourself.pdf",
        "image": "know_yourself_to_lead_yourself.pdf",
        "backgroundColor": ["red": 215, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
        "name": "The Core",
        "shape": "icon_thecore.pdf",
        "image": "the_core.pdf",
        "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
        "name": "5 Circles of Influence",
        "shape": "icon_5circles.pdf",
        "image": "5_circles_of_influence.pdf",
        "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
        "name": "Support Challenge Matrix",
        "shape": "icon_supportchallenge.pdf",
        "image": "support_challenge_matrix.pdf",
        "backgroundColor": ["red": 205, "green": 34, "blue": 14, "alpha": 1.0]
        ]
    ]
    tools.append([
        "name": "Creating Healthy Culture",
        "shape": "icon_healthyculture.pdf",
        "image": "creating_healthy_culture.pdf",
        "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
    ])

}

3 Answers

Andrew Rodko
Andrew Rodko
27,881 Points

I think the problem is that you're trying to append within the struct, and you can only place declarations in a struct. Try appending somewhere else outside the struct, like in the init.

Chris Ediger
Chris Ediger
1,965 Points
Chris Ediger
Chris Ediger
1,965 Points

Thanks, Andrew. I tried moving the append statement outside of the struct, but that didn't work. How would I add an init with it in it? (Sorry, pretty new to Swift.)

Chris Ediger
Chris Ediger
1,965 Points
Chris Ediger
Chris Ediger
1,965 Points

I think I've figured it out...

import Foundation

struct Toolkit {
    var tools = [ [
        "name": "Know Yourself to Lead Yourself",
        "shape": "icon_knowyourself.pdf",
        "image": "know_yourself_to_lead_yourself.pdf",
        "backgroundColor": ["red": 215, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
        "name": "The Core",
        "shape": "icon_thecore.pdf",
        "image": "the_core.pdf",
        "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
        "name": "5 Circles of Influence",
        "shape": "icon_5circles.pdf",
        "image": "5_circles_of_influence.pdf",
        "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
        ],
        [
        "name": "Support Challenge Matrix",
        "shape": "icon_supportchallenge.pdf",
        "image": "support_challenge_matrix.pdf",
        "backgroundColor": ["red": 205, "green": 34, "blue": 14, "alpha": 1.0]
        ]
    ]

    init() {
        tools.append([
            "name": "Creating Healthy Culture",
            "shape": "icon_healthyculture.pdf",
            "image": "creating_healthy_culture.pdf",
            "backgroundColor": ["red": 185, "green": 34, "blue": 14, "alpha": 1.0]
            ])
    }
}