How to check value exists in array of dictionary as value?

Question

{
        QueueId = 27;
        SongId = 38;
        artWorkURL = "<null>";
        duration = 58258;
        "stream_url" = "https://api.soundcloud.com/tracks/233301835/stream";
        title = Magenta;
        trackID = 233301835;
        userAvatar = "https://i1.sndcdn.com/avatars-000188204071-llusgk-large.jpg";
        userName = Agiv;
    },
            {
        QueueId = 27;
        SongId = 39;
        artWorkURL = "<null>";
        duration = 79000;
        "stream_url" = "https://api.soundcloud.com/tracks/233301833/stream";
        title = Nino;
        trackID = 233301833;
        userAvatar = "https://i1.sndcdn.com/avatars-000157591669-eva3mg-large.jpg";
        userName = "SWR Umwelt und Ern\U00e4hrung";
    }

My array of dictionary format is as above and multiple tracks i want to check 27 is already there or not ?

http://stackoverflow.com/questions/31315232/check-if-value-is-in-the-array-as-dictionary-value already checked this not working — Janak LN, Nov 16 '15 at 13:41
You can iterate over whole array and parse each dictionary individually to check for `trackID` 25. — NSNoob, Nov 16 '15 at 13:43
is this an array or dictionary?. As far as i know you cannot add key-value pairs to an array. How is this format even possible? — Pratyusha Terli, Nov 16 '15 at 14:13
@PratyushaTerli it is an array of dictionaries. i.e. an array which comprises of members of type dictionary. — NSNoob, Nov 16 '15 at 14:30
I is edited now @NSNoob it was "track":["abc":"def","test":"test2"] in this format earlier — Pratyusha Terli, Nov 16 '15 at 14:33

vadian · Accepted Answer · 2015-11-16T14:20:29.240

3

You can do this with the filter function

let queueID27Exists = !array.filter({$0["QueueId"] as? Int == 27}).isEmpty

edited Nov 16 '15 at 14:20

answered Nov 16 '15 at 13:49

vadian

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score 1 · Answer 2 · edited Nov 16 '15 at 14:54

1

This answer is for your previous JSON object!

if let results : NSDictionary = post.objectForKey("data") as? NSDictionary {
     let array:NSArray = (results.valueForKey("track") as! NSArray)
     if "25" == array[0].valueForKey("trackID") as? String {
         NSLog("YES")
     } else {
         NSLog("NO")
     }
 }

edited Nov 16 '15 at 14:54

NSNoob

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answered Nov 16 '15 at 14:23

Ebru Güngör

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score 0 · Answer 3 · answered Nov 16 '15 at 13:47

0

var found = false    
for (_, data) in post {
    let track = data["track"]
    if track["trackID"] == "25" {
        found = true
    }

answered Nov 16 '15 at 13:47

Tim

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i have array of tracks – Janak LN Nov 16 '15 at 13:49
Then you just need to iterate through them with `for` – Tim Nov 16 '15 at 13:51
Is it an array of "data" or an array of "track"? Can you show me an example with two tracks? I can't follow the structure. – Tim Nov 16 '15 at 13:54

How to check value exists in array of dictionary as value?

3 Answers3