有一天客戶抱怨app 某頁 load 很久.... 然後就寫了這一篇

1. SwiftyJSON
Hokila

2. star module
parser

3. app load
API response
parse

4. 1.
2. api spec
3. parser

5. NSData Model

6. NSData ModelNSDictionary
Objective-C

7. NSData ModelNSDictionary
Swift

8. NSData Model
Swift

9. NSData Model
Swift
[String:AnyObject]

10. NSData Model
Swift
[String:AnyObject]
JSON

11. NSData Model
Swift
JSON

12. NSData ModelJSON
SwiftyJSON Parser

14. SwiftyJSON

15. NSDictionary

16. parser 3

17. private func parseAndReloadUI(json:JSON){
let start = CACurrentMediaTime()
let candidateItems = self.parseJSON(json)
print("time parse = (CACurrentMediaTime() - start)")
self.items = candidateItems
self.reloadUI()
}

18. private func parseAndReloadUI(json:JSON){
let start = CACurrentMediaTime()
let candidateItems = self.parseJSON(json)
print("time parse = (CACurrentMediaTime() - start)")
self.items = candidateItems
self.reloadUI()
}
time parse = 3.6

19. private func parseAndReloadUI(json:JSON){
let start = CACurrentMediaTime()
let candidateItems = self.parseJSON(json)
print("time parse = (CACurrentMediaTime() - start)")
self.items = candidateItems
self.reloadUI()
}
time parse = 3.6
time parse = 0.28

20. private func parseAndReloadUI(json:JSON){
let start = CACurrentMediaTime()
let candidateItems = self.parseJSON(json)
print("time parse = (CACurrentMediaTime() - start)")
self.items = candidateItems
self.reloadUI()
}
time parse = 3.6
time parse = 0.28
code

21. parser
• as? SwiftyJSON
• SwiftyJSON NSDictionary
• parse node cache reuse

22. NSData ModelJSON
SwiftyJSON Parser
NSData ModelNSDictionary
NSJSONSerialization Parser

23. • SwiftyJSON NSJSONSerialization
• variable lazy