Need to make two HTTP network requests simultaneously (with a completion handler once both finish)

Question

I have a situation where I need to make two HTTP GET requests and handle their results only after both are finished. I have a completion handler on each individual network r

Answer 1

Source: How do I write dispatch_after GCD in Swift 3? You can use dispatch_group for that. For example (ObjC code):

dispatch_group_t group = dispatch_group_create();

//startOperation1
dispatch_group_enter(group);

//finishOpeartion1
dispatch_group_leave(group);


//startOperation2
dispatch_group_enter(group);

//finishOpeartion2
dispatch_group_leave(group);


//Handle both operations completion
dispatch_group_notify(group, dispatch_get_main_queue(), ^{ 
//code here
});