What is the best way to update the interface?

Question

Cocoa

There is a music player and a slider showing the current playback percentage. What is better to use to update it? NSTimer or GCD? Maybe there are other options? (needed on swift)

Answer 1

What is better to use to update it? NSTimer or GCD?

What is the best way to dig? Shovel or TV? It's nothing that it's not the same thing, isn't it?
Z/S/ Google it for you: -> stackoverflow.com/questions/29542001/audio-playbac...