Slow JSON Processing Speed with SwiftyJSON

I have integrated a large JSON file (500kb) using SwiftyJSON.swift library. It's actually a gpx-file from Strava that I imported successfully.

However, the code snippet below is performing very slow, only processing one integration per second. Why is this happening and what steps can I take to improve the performance?

for index in 0...json1["trk"]["trkseg"]["trkpt"].length-1 {
    lat = Double(json1["trk"]["trkseg"]["trkpt"][index]["@attributes"]["lat"].asString!)!
    long = Double(json1["trk"]["trkseg"]["trkpt"][index]["@attributes"]["lon"].asString!)!
}
jsonswiftswifty-json

Answer №1

Perhaps one way to optimize your code for better performance is by making the following adjustment:

let data = jsonData["trail"]["trackSegment"]["trackPoint"]
for item in data {
    latitude = Double(item["@attribs"]["latitude"].asString!)!
    longitude = Double(item["@attribs"]["longitude"].asString!)!
}

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