Json in swift 3 passing array

Question

subject_id=[{"program_id": "1","subject_id":"1"},{"program_id":%20"2","subject_id":"5"}]

I Want to make this type of json.

This is my code i am trying to change subject_id only but it prints whole array. how can i change it.

let subject_id = [String](arrayLiteral: "1","5")

let program_id = [String](arrayLiteral: "1","3")

for program_id in program_id
        {
            print(program_id)
        }

        let phoneNumbersDictionary = program_id.map({ ["program_id": $0 , "subject_id" : $0 ] })


        let JSON = try? JSONSerialization.data(withJSONObject: phoneNumbersDictionary, options: [])

        if let JSON1 = JSON
        {
            print(String(data: JSON1, encoding: String.Encoding.utf8)!)
        }

Hunaid Hassan · Accepted Answer · 2018-02-22 17:07:51Z

1

If you want to use map, zip the 2 arrays before. Here is the working snippet

let pNumbers = zip(subject_ids, program_ids).map { s_id, p_id in ["subject_id": s_id, "program_id": p_id] }

answered Feb 22, 2018 at 17:07

Hunaid Hassan

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Comments

justintime · Accepted Answer · 2018-02-22 15:27:42Z

0

For-in would be easier:

var index = 0
for pid in program_id {
    array.append(["program_id": pid, "subject_id": subject_id[index]])
    index = index + 1
}

If you really want to use map:

let phoneNumbersDictionary = program_id.map({ ["program_id": $0 , "subject_id" : subject_id[program_id.index(of: $0)!]]})

But I'd like to avoid the force unwrap.

answered Feb 22, 2018 at 15:27

justintime

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