ios - Swift/Xcode - Search API and compare current value(s) with rest of API - SwiftyJSON & AlamoFire -

firstly, point out, have search function implemented use of search-bar , alamofire. , can download , present data in collectionview. wondering how implement following:

this api looks like:

students: [ { "firstname": "fred", "lastname": "bloggs", "testscore": "89", }, { "firstname": "frank", "lastname": "thomas", "testscore": "91", }, { "firstname": "joe", "lastname": "morrison", "testscore": "45", }, ] brief example of api.

so currently, able download information uicollectionview. struggling pass data have downloaded api detailviewcontroller. trying pass lastname , testscore @ current index path.

i wish following:

when loading detailviewcontroller wish testscore of selected indexpath , return other students have similar score 3, 5 , 10. involve comparing current testscore whole api again, correct?

for example:

if selected frank, similar student fred. frank has test score of 91 , fred has score of 89. due fred's score , frank's score having difference of 3. if select fred, frank appear. due difference being 3.

i hope make's sense.

this current code have far. leave out uicollectionview code fair straight forward.

homeviewcontroller.swift

    class homeviewcontroller: uiviewcontroller, uicollectionviewdatasource, uicollectionviewdelegate{          @iboutlet weak var collectionview: uicollectionview!         @iboutlet weak var searchbar: uisearchbar!           var students = [json]() {             didset {                 self.collectionview.reloaddata()             }         }           override func viewdidload() {             super.viewdidload()             collectionview.delegate = self             collectionview.datasource = self             searchbar.delegate = self             searchbar.placeholder = "search player"             searchbar.searchbarstyle = .minimal             definespresentationcontext = true                  notificationcenter.default.addobserver(self, selector: #selector(homeviewcontroller.search(searchtext:)), name: nsnotification.name(rawvalue: "searchresultsupdated"), object: nil)             // additional setup after loading view.         }            func search(searchtext: string) {             self.students.removeall()              let url = "(api url)"             alamofire.request(url, method: .get).responsejson { response in                 if let results = response.result.value as? [string:anyobject] {                       let listofstudents = json(results["students"]!).arrayvalue                     self.students += listofstudents                       notificationcenter.default.post(name: nsnotification.name(rawvalue: "searchresultsupdate"), object: nil)                  }              }         }       func collectionview(_ collectionview: uicollectionview, numberofitemsinsection section: int) -> int {         //#warning incomplete method implementation -- return number of items in section         return student.count     }      func collectionview(_ collectionview: uicollectionview, didselectitemat indexpath: indexpath) {        performsegue(withidentifier: "searchview_playerdetailssegue", sender: nil)         var detailsviewcontroller = self.storyboard?.instantiateviewcontroller(withidentifier: "detailsviewcontroller") as! studentdetailviewcontroller         detailsviewcontroller.studentname = (cannot work!)      }       func collectionview(_ collectionview: uicollectionview, cellforitemat indexpath: indexpath) -> uicollectionviewcell {         let cell: playercollectionviewcell = collectionview.dequeuereusablecell(withreuseidentifier: "studentcell", for: indexpath indexpath) as! studentcollectionviewcell          cell.studentnamelabel.text = student[indexpath.row]["name"].stringvalue         return cell     }       deinit {         notificationcenter.default.removeobserver(self)     }   }   extension homeviewcontroller: uisearchbardelegate {      func searchbarsearchbuttonclicked(_ searchbar: uisearchbar) {         search(searchtext: searchbar.text!)          dispatchqueue.main.async() {             self.collectionview.reloaddata()         }     } } 

i have amended code ease of reading. if there mistakes, it's not actual code.

thank time.

kind regards.