SwiftUI List performance

I have noticed some significant changes to iOS bluetooth low energy connection interval and allowed packets per interval. I'm using a maker ble device to transmit sensor data at high rates, quick connect and disconnect because the user comes in and out of range frequently. I can request connection interval updates peripheral side and have done some timing to see how many packets are transmitted per interval. iOS 8.1 seems to allow connection interval of 18.75 ms with 7 packets per interval.iOS 8.3 seems to allow connection interval of 15.0 ms with 3 packets per interval.I want to transfer 100 notification packets, with the above info my transfer is roughly cut in half!!iOS 8.1 takes approx .267 seconds (100/7*18.75 ms)iOS 8.3 takes approx .5 seconds (100/3*15 ms)I watched a protocol trace with my Apple Watch connecting and it showed a connection interval of 30 ms and during high data transfers as many as 7 notification packets per interval (Handoff in action!)Anyone else requesting a connection interval updat

https://devforums.apple.com/message/1130381#1130381I had the same problem as description on the above link. I applied the solution about removing armv7 from valid architecture on both iPhone and Watch extension app, Then did the following steps:Build & run your iOS app in the simulator.Wait for it to finish launching, then hit the stop button in Xcode.Switch your active target to your WatchKit app, build, and run it.When the Watch app has finished launching, tap your iOS app's icon in the main simulator window.In Xcode's menu bar select Debug > Attach to Process.Select your iOS app from the list. Chances are you'll find it under Likely Targets.But xcode still display complain message waiting for attach, I would be very appreciate it if someone could help.Thank you ( :

Hi allI can't seen to find where I can look up my posts in these forums. I've tried activity' on the main menu and 'Activity' on my profile popup. Both just show me a list of everything. It makes it really hard to check back on posts I've made.Anyone know where to look?CiaoDerek

Hi there, this is the best place I could find to post it, please let me know if it should be posted somewhere else.I have four servers working great, named macminiserver1 though to macminiserver4. On client machines in Finder>network I see those listed as well as the other clients, Windows VMs, etc. but there's one entry that I'm curious about. There is a folder, called Servers, clicking on it reveals a folder named macminiserver.(company).(domain) and in there /Volumes/Home Folders/ which is empty and cannot be written to.Get Info shows I have unknown access and not much else.I'm sure this is a holdover from one of the server's previous lives, I did have mobile accounts with home folders synced to a server at one point and gave up as it was a buggy mess and converted them back to network accounts.How do I go about tracking down the source of this zombie server and deleting it? Finder gives an error when I try from there.Thanks!

Hi,Is it possible to modify value of default metadata for a file (let say value of kMDItemFSSize OR kMDItemPhysicalSize) ?Actually I want to display a virtual file icon in finder with some customized values of default metadata.Below is the list of default metadata for a file:kMDItemContentCreationDate = 2015-06-18 08:06:50 +0000kMDItemContentModificationDate = 2015-06-18 08:08:11 +0000kMDItemContentType = public.plain-textkMDItemContentTypeTree = ( public.plain-text, public.text, public.data, public.item, public.content)kMDItemDateAdded = 2015-06-18 08:08:11 +0000kMDItemDisplayName = test.txtkMDItemFSContentChangeDate = 2015-06-18 08:08:11 +0000kMDItemFSCreationDate = 2015-06-18 08:06:50 +0000kMDItemFSCreatorCode = kMDItemFSFinderFlags = 0kMDItemFSHasCustomIcon = (null)kMDItemFSInvisible = 0kMDItemFSIsExtensionHidden = 0kMDItemFSIsStationery = (null)kMDItemFSLabel = 0kMDItemFSName = test.txtkMDItemFSNodeCount = (null)kMDItemFSOwnerGroupID = 20kMDItemFSOwnerUserID = 501kMDItemFSSize = 3621kMDItemFSSiz

Swift programing Language Sample Code:for index in indices(greeting) { print((greeting[index]) )}XCode 7 Beta Complier report Error: cannot invoke 'indices' with an argument list of type '(String)' 'indices' is unavailable : access the 'indices' progperty on the collection

Xcode 6.3.2 quits unexpectedly when submitting to iTunes StoresHello,It seems that everytime I submit to the app store, Xcode quits unexpectedly.Here's a screenshot of the Xcode Report Problem:So I have a valid distribution profile. I was able to archive. When I click the validate button, the archive was validated. But when I actually submit to the app store, Xcode just quits unexpectedly right when it starts Uploading ArchiveIs there anything I need to do before I make an archive in Xcode? Is it an Xcode 6.3.2 problem?Process: Xcode [3276] Path: /Applications/Xcode.app/Contents/MacOS/Xcode Identifier: com.apple.dt.Xcode Version: 6.3.2 (7718) Build Info: IDEFrameworks-7718000000000000~2 App Item ID: 497799835 App External ID: 812404257 Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: Xcode [3276] User ID: 501 Date/Time: 2015-06-19 15:13:34.165 +0700 OS Version: Mac OS X 10.10.3 (14D136) Report Version: 11 Anonymous UUID: 7712FAC3-808B-7650-2B59-856F778E8370 Sleep/Wake UUID: 61663078-DBA5-4EFB-A

Suppose you have a protocol to describe types capable of performing some statistical sampling, as follows,public protocol Sampling: CustomStringConvertible { var size: Int {get} var total: Double {get} var minimum: Double {get} var maximum: Double {get} var mean: Double {get} var variance: Double {get} var standardDeviation: Double {get} mutating func updateWithNewValue(x: Double) }and a struct type that conforms to that protocol:public struct StatisticalSample: Sampling { public init() {} public private(set) var size = 0 public private(set) var total: Double = 0 public private(set) var minimum: Double = 0 public private(set) var maximum: Double = 0 public var mean: Double { return newMean } public var variance: Double { return newVar } public var standardDeviation: Double { if !cachedStdDevIsValid { cachedStdDev = sqrt(newVar) cachedStdDevIsValid = true } return cachedStdDev } public var description: String { return [sample size: (size), total: (total), min: (minimum), max: (maximum), + mean: (mean

Coding: Objective-CI can not send the application to Apple, I get this error when upload in Organizer.Closing xcode and i get this error.Can you help me?Thank u--------------------------Process: Xcode [5286]Path: /Applications/Xcode.app/Contents/MacOS/XcodeIdentifier: com.apple.dt.XcodeVersion: 6.3.2 (7718)Build Info: IDEFrameworks-7718000000000000~2App Item ID: 497799835App External ID: 812404257Code Type: X86-64 (Native)Parent Process: ??? [1]Responsible: Xcode [5286]User ID: Date/Time: 2015-06-19 10:25:04.073 +0300OS Version: Mac OS X 10.10.3 (14D136)Report Version: 11Anonymous UUID: Sleep/Wake UUID: Time Awake Since Boot: 7100 secondsTime Since Wake: 3300 seconds⚠Crashed Thread: 15 Dispatch queue: NSOperationQueue 0x7fb2c8a0bf50 :: NSOperation 0x7fb2c8bf5480 (QOS: USER_INITIATED)⚠Exception Type: EXC_CRASH (SIGABRT)Exception Codes: 0x0000000000000000, 0x0000000000000000Application Specific Information:ProductBuildVersion: 6D2105ASSERTION FAILURE in /SourceCache/IDEFrameworks/IDEFrameworks-7718/IDEFoundatio