A Summary of the WWDC25 Group Lab

Configuration: OS X El Capitan GM Seed (15A282b) on a 2015 MacBook AirI'm trying to generate a Certificate Signing Request (CSR) for Safari Extension development.The instructions, per https://developer.apple.com/account/safari/certificate/certificateRequest.actionTo manually generate a Certificate, you need a Certificate Signing Request (CSR) file from your Mac. To create a CSR file, follow the instructions below to create one using Keychain Access.Create a CSR file.In the Applications folder on your Mac, open the Utilities folder and launch Keychain Access.Within the Keychain Access drop down menu, select Keychain Access > Certificate Assistant > Request a Certificate from a Certificate Authority.In the Certificate Information window, enter the folwing information: In the User Email Address field, enter your email address.In the Common Name field, create a name for your private key (e.g., John Doe Dev Key).The CA Email Address field should be left empty.In the Request is group, select the Save

Here is the results of using Metal Compute kernels as a replacement for OpenCL in the app Fractal Architect 4.(We have released versions of this app running on OpenCL since 2011.)Metal ================================Intel Iris Pro GOOD:+ Intel HD 5000 Fast Kernel compile times 5 secs Great render performance 9 to 12X faster than CPU rendering BAD: Repeatable GPU Hangs on about 10% of fractals. (Not random behavior - only affects specific fractals) Believe Metal math lib is causing GPU panic if a NaN value is encountered. (They should be propagated.) OpenCL drivers have no problems with this. GPU Hangs are the bomb. Entire Mac acts like it has frozen for about 10 secs until GPU resets.Intel HD 4000 BAD: Very slow kernel compiles - succeeds but takes 2 min 57 seconds. So-so render performance 1.4X faster than CPU rendering AMD BAD: Kernel compile failure at 2 min 20 secs.Nvidia 650M GOOD: Kernel compiles in 16 secs BAD: Garbage OutputWe quarantine the devices where Metal does not work. (So users dont have a ba

My design has a circle timer on the glances view and I need to utilize the entire screen space (like the apple's in-built activity or map app design). But, when I try to implement the same design, I found that the templates available for the glances view is section based (Group, Group Label, Label etc…). It seems the developer needs to use at-least two sections and your first or second section is gonna occupy 25% of the screen space. Is there a way to keep only one section and utilize 100% of the screen to display a circle image or an animation?Thanks.P.S. I’m a designer not a developer, apologizes for using non-technical terms.

Could someone help: I am curious if Swift has a way to store collections of class types the way that .net does.For example .NET has something called a List(). If I have a class A, I can create thisList<A> Col = new List<A>();B test = new B();// Then I can add object's of type A ie: Col.Add(B);I know Swift has array's of strings, int's etc but how do you group class types?thanksDavid.

Hello,We are drawing to a screen context in [NSView drawRect:] using an NSColor based off of a L*a*b* NSColorSpace loaded form an ICC Profile. On 10.11, we get the following assertion:Assertion failed: (space->state->type == kCGColorSpaceLAB), function CGColorSpaceGetLabData, file ColorSpaces/CGColorSpace_Lab.c, line 137.The same exact code works on 10.8 and up. Any ideas what might have changed? Is this new or am i doing something all wrong? Here's the simple code:- (void)drawRect:(NSRect)dirtyRect{ NSString* labProfilePath = [[NSBundle mainBundle] pathForResource:@Lab ofType:@icc]; NSData* labProfileData = [NSData dataWithContentsOfFile:labProfilePath]; NSColorSpace* labCS = [[NSColorSpace alloc] initWithICCProfileData:labProfileData]; CGFloat components[4] = { 0, 1, 1, 1 }; NSColor* color = [NSColor colorWithColorSpace:labCS components:components count:4]; [color set]; [[NSBezierPath bezierPathWithRect:dirtyRect] fill];}regards,Alex Cohen

Helllo,I'm using cocoa pods and When I open My Project (.xcworkspace) after that I see this problem. If you want I can copy all text. I'm confused. I didnt to anything. Xcode open other file but this project cannot opened.Process: Xcode [2164] Path: /Applications/Xcode.app/Contents/MacOS/Xcode Identifier: com.apple.dt.Xcode Version: 7.0 (8227) Build Info: IDEFrameworks-8227000000000000~2 App Item ID: 497799835 App External ID: 813293765 Code Type: X86-64 (Native) Parent Process: ??? [1] Responsible: Xcode [2164] User ID: 501 Date/Time: 2015-09-25 14:30:54.645 +0300 OS Version: Mac OS X 10.10.5 (14F27) Report Version: 11 Anonymous UUID: 23EB5B80-9885-BE11-4263-41F6CC384A3B Sleep/Wake UUID: 674459DE-8D63-40EE-AFC1-439575E256A3 Time Awake Since Boot: 6300 seconds Time Since Wake: 1500 seconds Crashed Thread: 19 Exception Type: EXC_CRASH (SIGABRT) Exception Codes: 0x0000000000000000, 0x0000000000000000 Application Specific Information: ProductBuildVersion: 7A220 ASSERTION FAILURE in /Library/Caches/com.apple.xbs/