mr Marathi | |
bs Bosnian | |
ee_TG Ewe (Togo) | |
ms Malay | |
kam_KE Kamba (Kenya) | |
mt Maltese | |
ha Hausa | |
es_HN Spanish (Honduras) | |
ml_IN Malayalam (India) | |
ro_MD Romanian (Moldova) |
#ifndef NS_DESIGNATED_INITIALIZER | |
#if __has_attribute(objc_designated_initializer) | |
#define NS_DESIGNATED_INITIALIZER __attribute((objc_designated_initializer)) | |
#else | |
#define NS_DESIGNATED_INITIALIZER | |
#endif | |
#endif |
(by @andrestaltz)
If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.
Thank you everybody, Your comments makes it better
sh -c "$(curl -fsSL https://raw.github.com/ohmyzsh/ohmyzsh/master/tools/install.sh)"
The libdispatch is one of the most misused API due to the way it was presented to us when it was introduced and for many years after that, and due to the confusing documentation and API. This page is a compilation of important things to know if you're going to use this library. Many references are available at the end of this document pointing to comments from Apple's very own libdispatch maintainer (Pierre Habouzit).
My take-aways are:
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You should create very few, long-lived, well-defined queues. These queues should be seen as execution contexts in your program (gui, background work, ...) that benefit from executing in parallel. An important thing to note is that if these queues are all active at once, you will get as many threads running. In most apps, you probably do not need to create more than 3 or 4 queues.
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Go serial first, and as you find performance bottle necks, measure why, and if concurrency helps, apply with care, always validating under system pressure. Reuse
import UIKit | |
@UIApplicationMain | |
class AppDelegate: UIResponder, UIApplicationDelegate { | |
var window: UIWindow? | |
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool { | |
let window = UIWindow(frame: UIScreen.main.bounds) |