How to fetch data from 2 csv files in swift -


my app gets data (points on map) .csv file san francisco.

what should change in code data san francisco oakland, .csv file have added?

func setupdata() { pointsdatasource = pointsdatasource(with: "san francisco")  //if let pointsdatasource = pointsdatasource { //map.addannotations(pointsdatasource.annotations) //} }

enter image description here

there few different methods scanning csv file app using swift. found able create own class method thought useful.

i have apologise because haven't referenced internet posts other developers helped me out - if come accross them again i'll include them!

here class:

import foundation  class csvscanner {  class func debug(string:string){      println("csvscanner: \(string)") }  class func runfunctiononrowsfromfile(thecolumnnames:array<string>, withfilename thefilename:string, withfunction thefunction:(dictionary<string, string>)->()) {      if let strbundle = nsbundle.mainbundle().pathforresource(thefilename, oftype: "csv") {          var encodingerror:nserror? = nil          if let fileobject = nsstring(contentsoffile: strbundle, encoding: nsutf8stringencoding, error: &encodingerror){              var fileobjectcleaned = fileobject.stringbyreplacingoccurrencesofstring("\r", withstring: "\n")              fileobjectcleaned = fileobjectcleaned.stringbyreplacingoccurrencesofstring("\n\n", withstring: "\n")              let objectarray = fileobjectcleaned.componentsseparatedbystring("\n")              anobjectrow in objectarray {                  let objectcolumns = anobjectrow.componentsseparatedbystring(",")                  var adictionaryentry = dictionary<string, string>()                  var columnindex = 0                  anobjectcolumn in objectcolumns {                      adictionaryentry[thecolumnnames[columnindex]] = anobjectcolumn.stringbyreplacingoccurrencesofstring("\"", withstring: "", options: nsstringcompareoptions.caseinsensitivesearch, range: nil)                      columnindex++                 }                  if adictionaryentry.count>1{                     thefunction(adictionaryentry)                 }else{                      csvscanner.debug("no data extracted row: \(anobjectrow) -> \(objectcolumns)")                 }             }         }else{             csvscanner.debug("unable load csv file path: \(strbundle)")              if let errorstring = encodingerror?.description {                  csvscanner.debug("received encoding error: \(errorstring)")             }         }     }else{         csvscanner.debug("unable path csv file: \(thefilename).csv")     }   } }

you can implement in code this:

var mycsvcontents = array<dictionary<string, string>>()  csvscanner.runfunctiononrowsfromfile(["title", "body", "category"],    withfilename: "filename.csv", withfunction: {      (arow:dictionary<string, string>) in      mycsvcontents.append(arow)  })

this build array of dictionary objects, each representing row csv. need supply array first parameter contains header labels of csv document - make sure include label every column!

however, feel free skip adding rows array - can run function on each row. instance, may want add these directly coredata object.


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