SwiftUI List performance

Two parts to session:Transitioning to IPv6-only networksReducing Delays in NetworkingTransitioning to IPv6-only networksMore mobile carriers are moving to IPv6 networksIn Ye Olde Days, cellular data networks used IPv4. As IPv4 addresses ran out, NAT was introduced to make IPs go further.To fix the long-term problem, mobile carriers are now moving to IPv6. But they're also having to support IPv4 with NAT.The carriers want to drop IPv4 with NAT, so they're deploying DNS64/NAT64 to handle translation between IPv4 and IPv6 networks.DNS64 synthesizes an IPv6 address for an IPv4-only serverNAT64 performs IPv6 to IPv4 address translationApp Store apps need to be IPv6 ready - It will be an app submission requirement later in 2015.Enabling IPv6 test network from a Mac1. Boot OS X 10.112. Open System Preferences3. Option-click on the Sharing preference pane4. Option-click on Internet Sharing5. A Create IPv6 Only Network checkbox will appear6. Check Create IPv6 Only Network (this may also be labeled Create NAT6

Hi,Is there a device/Xcode version compatibility list? I am trying to build and run an app on an iPhone 3GS to test compatibility with iOS 6 but Xcode 6 is not seeing the connected iPhone 3GS. Will I need to install Xcode 5 alongside the newer version to test on iPhone 3GS? Thank you.Also, I know that not many devices are running iOS 6 anymore so please do not say that I shouldn't support it; some users are still using that version more various reasons and iOS 6 is the earliest version supporting autolayout (which is the only requirement for my project).

Hi Everyone,I just tried to post this, but the cancel button is right below the tags control, and doesn't have a confirmation action, so I think I lost it. If this is a double post due to some kind of moderation delay apologies in advance...Anyway, on to the issue at hand. I have some Swift 1.2 code for OpenCL that I'm working on porting to Swift 2, and I'm having some trouble with the type system. The way that OpenCL is bridged into swift relies heavily on typedefs, and there are a TON!! of them. I had to perform some gymnastics in 1.2 to convince the type system that my argument is just the right kind of UInt32 (or is it cl_device_info?), but now those aren't enough in 2.A short sample of (some of!) the suspect code follows. There are about 50 instances of this kind of error in the project: private class func deviceInfoString(deviceID: cl_device_id, param paramIn: Int32) throws -> String { let param = cl_device_info(paramIn) var returnBufferSize: Int = 0 var retval: cl_int = CL_SUCCESS retval =

Refer to example 5 here: https://developer.apple.com/library/ios/documentation/NetworkingInternet/Conceptual/RemoteNotificationsPG/Chapters/ApplePushService.html#//apple_ref/doc/uid/TP40008194-CH100-SW20It uses an actions property that isn't listed as a valid child property of alert in Table 3-2 on the same page. I thought notification categories are the proper method to define custom notification actions? What is the purpose of this actions property?

I need to use MapKit in an OSX app I'm writing for my engineering thesis (I'm studying geodesy and cartography). So no commercial use at all. Is there any way to access MapKit framwork without paying for developer's program? I know about university iOS program but the app wouldn't make any sense for ios device (it performs complicated geodetic calculations, can read data from txt file and save reports). Using mapkit would be a perfect way to visualize results.

Two days into my Swift (2) experience...func X( a:Int, b:Int) { print(a,b) } X( 1, 2) // error: missing argument label 'b:' in call X(a:1, 2) // error: incorrect argument labels in call (have 'a:_:', expected '_:b:') X( 1, b:2) // ok X(a:1, b:2) // error: extraneous argument label 'a:' in callHorror!😢😮😠😕😟➖⚠✖ And I *never* use Emoji.Contrast this with:print( [1,2,3].contains(2) )Perfect, I didn't know any of that syntax. But that's what I would expect. That's 'Pythonic'. Writing out my idea in straight pseudocode, and it works! Isn't that the goal of all of this? Getting the most natural effortless straightforward syntax?That named parameter mess reminds me of C++, where everything breaks down into a zillion edge cases.(On a side note, I wasted a lot of effort trying to get named parameters past the C++ committee. So there is some irony in the fact that although Swift has done it, it has in-so-doing created a C++-style awfulness).I am making a bad smell here for a reason. Because I've watched the videos,

I assmue the search results is based on keywords, downloads and app ratings. Please correct me if I am wrong. Also is there any other criterai for the app to be listed on top of the search results? Is there any advertising program where app can be listed as featured etc?.

On WatchOS, there is a notification that seems to go off about ten minutes until the hour that reminds you to stand up and move around some. I know we can schedule local notifications, but when the notification is triggered how is Apple checking if they actually need to present the notification or not? For example, if I have stood in the past hour and moved around, there's no need to show me the notification at 10 minutes until the hour.My app runs on iOS. Reaching a goal is dependent on a user's last known action and the time elapsed since that last action. Currently, the user can launch my app and logic will be run to let them know their progress in reaching their goal. What I would like is the ability to run this logic in the background while the app is backgrounded (or even if it is killed). The end result for the user would be their iPhone is in their pocket and my app notifies them when the goal has been reached.There is not a server component to my app. I am aware of things like region monitoring, moni

My issue is that the following code brings my frame rate (in a debug build) from 60 fps to 2 fps. (iPad Mini) Release is faster but still very slow (15fps)let objects = world!.children // world is an SKSpriteNode, the children added are a subclass of SKSpriteNode - this line alone causes no problemsfor object1 in objects{ for object2 in objects { // there is no code executed here - it's just empty but still very slow }}With ~200 nodes in the array, I realize it's about 40000 executions but I don't think it should be so slow with nothing going on in the loop.I would like to know if there is a way to setup a double nested loop like this which still has good performance for a debug build.I'm completely new to Swift so perhaps I'm inadvertently allocating things by looping like this.Please let me know if there is a more efficient way to loop through a list of SKSpriteNodes.thanks.