ios - how to use more efficiently SWXMLHash and how to set the class that will receive the data properly? -

i'm building project train schedule app, , i'm using api returns xml file,to manipulate data i'm using library called swxmlhash.

i need extract name of departure station destinations , departure times.

i created class store these data, need improve because i'm having trouble extracting destinations , departure times.

i able loop on xml file , names of departure stations.

here class :

class station {   var name : string    var destinations:[(dest:string, times:[int])]   init(withname name: string, destinations:[(dest:string, times:[int])]){   self.name = name   self.destinations = destinations    } } 

here code extract names of stations :

// code loops on xml file , retrieves name of departure stations   // create empty array of station class var stationstest = [station]()  // retrieve name of departure stations , add them , array of station elem in xml["root"]["station"].all{   var stations = elem["name"].element!.text!   var stationplaceholder = station(withname: stations, destinations: [(dest:"",times:[1])])   stationstest.append(stationplaceholder) } 

my problem how can destinations of each station appropriate times of departure

i suppose problem in way implemented class, need find better solution.

here sample of xml file i'm working with:

<?xml version="1.0" encoding="utf-8"?><root><uri><!   [cdata[http://api.bart.gov/api/etd.aspx?  cmd=etd&orig=all&ramdom=1454366707766]]></uri><date>02/01/2016</date> <time>02:44:52 pm pst</time> <station>   <name>lake merritt</name>   <abbr>lake</abbr>   <etd>     <destination>daly city</destination>     <abbreviation>daly</abbreviation>     <estimate>       <minutes>3</minutes>     </estimate>     <estimate>       <minutes>10</minutes>     </estimate>     <estimate>       <minutes>17</minutes>     </estimate>   </etd>   <etd>     <destination>dublin/pleasanton</destination>     <estimate>       <minutes>7</minutes>     </estimate>     <estimate>       <minutes>22</minutes>     </estimate>     <estimate>       <minutes>37</minutes>     </estimate>   </etd>   <etd>     <destination>fremont</destination>     <estimate>       <minutes>4</minutes>     </estimate>     <estimate>       <minutes>14</minutes>     </estimate>     <estimate>       <minutes>19</minutes>     </estimate>   </etd>   <etd>     <destination>richmond</destination>     <estimate>       <minutes>5</minutes>     </estimate>     <estimate>       <minutes>19</minutes>     </estimate>     <estimate>       <minutes>34</minutes>     </estimate>   </etd> </station>  <station>   <name>fruitvale</name>   <etd>     <destination>daly city</destination>     <estimate>       <minutes>6</minutes>     </estimate>     <estimate>       <minutes>12</minutes>      </estimate>     <estimate>       <minutes>22</minutes>     </estimate>   </etd>   <etd>     <destination>dublin/pleasanton</destination>     <estimate>       <minutes>10</minutes>     </estimate>     <estimate>       <minutes>25</minutes>     </estimate>     <estimate>       <minutes>40</minutes>     </estimate>   </etd> 

i used below code in swxmlhash playground , works on machine:

// need model etd element has destination , etd elements class etd {     var destination: string = ""     var estimates = [string]()      init(destination: string, estimates: [string]) {         self.destination = destination         self.estimates = estimates     } }  // each station has collection of etds (per xml) class station {     var name : string     var etds = [etd]()      init(withname name: string, etds: [xmlindexer]){         self.name = name          etd in etds {             self.etds.append(etd(                 destination: etd["destination"].element!.text!,                 estimates: etd["estimate"].all.map { $0["minutes"].element!.text! })             )         }     } }  var stationstest = [station]()  elem in xml["root"]["station"] {     var stations = elem["name"].element!.text!     var stationplaceholder = station(withname: stations, etds: elem["etd"].all)     stationstest.append(stationplaceholder) } 

basically, looks missing abstraction etd class - station doesn't contain list of destinations, list of etds. each etd has both destination and estimates minute.