That's cool! What I haven't been able to figure out is if we actually get FTL with JavaScriptCore on iOS 8, or better yet, if we can somehow gain access to a JSContext from the WKWebView.
More detail: I'm using ClojureScript to develop what are otherwise native iOS apps. (Meaning using UIKit, StoryBoards, UIButtons, UITextFields, view hierarchies, animations, etc.—the same stuff you would work with if you sat down at Xcode and wrote a "conventional" iOS app.) In other words, not self-contained web apps that manipulate the DOM of a page hosted in the app in order to render its UI (in which case WKWebView would be directly applicable and FTL would be enabled). You can do this using JavaScriptCore, which is akin to a "bare-bones" JavaScript engine that you can use to drive Objective-C objects that you've exported into JavaScriptCore, and vice-versa (drive the JavaScript from Objective-C). UIWebView, on the other hand, adds additional stuff to its JavaScript environment. You can certainly run the output of the ClojureScript compiler in JavaScriptCore, but the first thing you will run into is the lack console.log, which is easy to add back in via Objective-C. Then the next thing you might encounter is the lack of setTimeout (which occurs, for example if you use a core.async timeout channel)—which you can also add back in. Then, if you try to establish a REPL into JavaScriptCore, then you may find you are lacking socket.io, which you could also theoretically add to JavaScriptCore. At that point (essentially trying to run a browser REPL inside something that is arguably not a browser), I decided to just use UIWebView, simply for the purpose of REPL development, grabbing its JSContext (which is the same thing you get when you are working with JavaScriptCore), using private API. This is cool for development using the REPL, but it is safer to go back to JavaScriptCore for actual release builds that must pass review for the App Store. So, with WKWebView (the JITed replacement for UIWebView), those same questions come into play. Can we gain access to the JSContext of a hidden WKWebView using public API? (In that case it can be used all of the time, both for REPL dev and for release builds). Failing that, is JavaScriptCore JITed in iOS 8? On Wednesday, June 25, 2014 2:23:32 AM UTC-4, Steve Tickle wrote: > > In the upcoming IOS8, UIWebView has the same (JITed) performance as the > Safari, the distinction has been removed due to using the new inter-app > communication mechanism. This allows the remote application > (Safari/JavascriptCore/UIWebView) to display a view into another process, > thus bypassing the no-executable-pages issue. > > So basically... get the IOS8 beta & new XCode beta and play with it... > -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en --- You received this message because you are subscribed to the Google Groups "Clojure" group. To unsubscribe from this group and stop receiving emails from it, send an email to clojure+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
