swift3 get the array in side closure - arrays

Question

I would like to get the final result joblist array to use outside closure. Because I would like to setup a tableview by using Joblist array. .
let geoCoder = CLGeocoder()
geoCoder.geocodeAddressString(address) { (placemarks, error) in
if error == nil && (placemarks?.count)! > 0 {
let location2 = placemarks?[0].location
if let location1 = self.locationManager?.location {
let distanceInMeters = location1.distance(from: location2!)
let IntDis = Int(distanceInMeters)
//print(IntDis)
if IntDis < 40000 {
//print(address)
if let activityid = infoDictionary["ActivityID"] {self.newJob.ActivityID=activityid}
if let companyname = infoDictionary["CompanyName"] {self.newJob.CompanyName=companyname}
if let quantity = infoDictionary["Quantity"] {self.newJob.Quantity=quantity}
if let coupontitle = infoDictionary["Title"] {self.newJob.CouponTitle=coupontitle}
if let couponterms = infoDictionary["Terms"] {self.newJob.CouponTerms=couponterms}
if let expirdate = infoDictionary["ExpirDate"] {self.newJob.ExpirDate=expirdate}
if let contactperson = infoDictionary["ContactPerson"] {self.newJob.ContactPerson=contactperson}
if let tel = infoDictionary["TEL"] {self.newJob.TEL=tel}
self.joblist.append(self.newJob)
//print(self.joblist)
//self.tableView.reloadData()
}
}
}
}

Answer 1

You can do this in two ways:
Make the joblist variable global so it can be accessed from multiple places
Use a callback, which calls a new function while passing on previously gathered data. This is especially useful when the original "data getting" proces is a network task with a delay.
Global variables:
let geoCoder = CLGeocoder()
var jobList = [AnyClass]() //make a global array
geoCoder.geocodeAddressString(address) { (placemarks, error) in
...filtering code ...
joblist.append(self.newJob)
}
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
cell.textLabel = jobList[indexPath.row].ActivityID //or something else with the data
}
Using a callback(simple version which doesn't pass on itself to the next function):
geoCoder.geocodeAddressString(address) { (placemarks, error) in
...filtering code ...
doTableViewStuff(data: joblist)
}
func doTableViewStuff(data: [Jobs]) { //or whatever type of data
func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
let cell = tableView.dequeueReusableCell(withIdentifier: "Cell", for: indexPath)
cell.textLabel = data[indexPath.row].ActivityID //or something else with the data
}
}