CODEWITHSUNDEEP
jsonswift
Keith
Keith

Reputation: 35

How to access individual values of a struct?

I'm trying to print the individual members of Results after parsing JSON data and assigning it to Question. 

struct Question: Decodable
{
    let response_code: Int
    let results: [Results]
}

struct Results: Decodable
{
    let category: String
    let question: String
    let correct_answer: String
    let incorrect_answers: [String]   
}

I tried using:

print(question.results)

But I get:

[Trivia_Game.Results(category: "Entertainment: Music", question: "Which of the following bands is Tom DeLonge not a part of?", correct_answer: "+44", incorrect_answers: ["Box Car Racer", "Blink-182", "Angels & Airwaves"])]

How do I access the individual members such as "category" or "question"?

Upvotes: 0

Views: 135

Answers (2)

liamnickell
liamnickell

Reputation: 166

You would have to first access an individual element of question.results, like so:

question.results[n] // where n represents a valid array index number

And then to access specific properties of that individual Results structure, you would do it in the same way as you would access the value of a property of any other struct. For example, if you wanted to get the value of the category member of a Results structure, you would do this:

question.results[n].category

And then if you wanted to print the value of that specific member (again, using the category member as an example), you would do this:

print(question.results[n].category)

Now, if you wanted to print out the value of the category member for each of the Results structures in the question.results array, then you could use a for loop like so:

for result in question.results {
    print(result.category)
}

Hope that helps.

Upvotes: 1

vadian
vadian

Reputation: 285069

results is an array. You have to enumerate the array

let results = question.results
for result in results {
    print(result.category, result.question)
}

or 

question.results.forEach { print($0.category, $0.question) }

Upvotes: 1

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