William Jockusch’s answer solve this problem with easy trick. -(void) viewWillDisappear:(BOOL)animated { if ([self.navigationController.viewControllers indexOfObject:self]==NSNotFound) { // back button was pressed. We know this is true because self is no longer // in the navigation stack. } [super viewWillDisappear:animated]; }
I just found something in the TypeScript language specification, it’s fairly easy. I was pretty close. the syntax is the following: public myCallback: (name: type) => returntype; In my example, it would be class CallbackTest { public myCallback: () => void; public doWork(): void { //doing some work… this.myCallback(); //calling callback } } As a … Read more
Updating gems to their newest versions (omniauth 1.6.1 and omniauth-facebook 4.0.0) with: bundle update omniauth bundle update omniauth-facebook solved the issue. I am leaving this for future reference. Edit: Same thing worked for google authorization: bundle update omniauth-google-oauth2
The good news is that JavaScript is single threaded; this means that solutions will generally work well with “shared” variables, i.e. no mutex locks are required. If you want to serialize asynch tasks, followed by a completion callback you could use this helper function: function serializeTasks(arr, fn, done) { var current = 0; fn(function iterate() … Read more
The “CALLBACK” is a calling convention. There are other kinds of calling conventions. CALLBACK is the same as __stdcall. http://www.codeguru.com/cpp/cpp/cpp_mfc/callbacks/article.php/c10557 Some more information at Raymond Chen’s blog: https://devblogs.microsoft.com/oldnewthing/20040108-00/?p=41163
this is easy var callback = (function(){ var finishedCalls = 0; return function(){ if (++finishedCalls == 4){ //execute your action here } }; })(); Just pass this callback to all your methods, and once it has been called 4 times it will execute. If you want to use factory for this then you can do … Read more
Do something like this: void func(void *q) { NSObject* o = CFBridgingRelease(q); NSLog(@”%@”, o); } int main(int argc, const char * argv[]) { @autoreleasepool { NSObject* o = [NSObject new]; func((void*)CFBridgingRetain(o)); } return 0; } Note that CFBridgingRetain() and CFBridgingRelease() are macros around compiler attributes. Feel free to use either. I like the API variant … Read more
It is not necessary if your logic doesn’t require the result of the async call. Although not needed in your case, the documentation lists two benefits to having that warning enabled: While this is generally not necessary, it gives two main benefits. The first one is that you won’t forget to add ‘await’ when surrounding … Read more
For a portable solution, you can use boost::asio. Below is a demo I wrote a while ago. You can change t.expires_from_now(boost::posix_time::seconds(1)); to suit you need say make function call after 200 milliseonds. t.expires_from_now(boost::posix_time::milliseconds(200)); Below is a complete working example. It’s calling repeatedly but I think it should be easy to call only once by just … Read more