SwiftUI List performance

Hello,I have a huge core data content and I want the list of a particular entity to be indexed by Core Spotlight. How would I do it? Do I need to do a query and loop through all the fetched items to index each of them? A code example would really help. Thanks!

It's very strange, I have one device (iphone6) with iOS 8.4 (b3 and now b4), which shares the AppleID with another device (iPhone 5s - iOS 8.3). Both are using the same iCloud settings and iTunes library/login for iTunes match. Both back up to the iCloud backup but as different devices. Suddenly (soon after switching the iPhone 6 to 8.4b3, I *think*) the telephone call list of my iPhone 5s got duplicated on the iPhone 6 but not the other way round. After I had phoned my 5s the other day to find it my 6 showed missed call from [my iphone 6] in the night. This is puzzling. Anyone else encounter this?

Hi; I'm messing with the new CloudKit Web Service, and the fetch zones web service it's giving an auth required...https://api.apple-cloudkit.com/database/1/iCloud.xxx.xxxxxxx.xxxx/development/public/zones/list?ckAPIToken=MYAPITOKENI'm trying to query the public database, so what is I missing here?

Hi guys,I need to generate an RSA public key from a modulus and exponent and I'm unable to find any resources where someone has done this successfully. I can't even find a way to do it in Apples documentation. I have heard using SecKeyRef and/or OpenSSL is the way to go but searches on both of those lead to nothing that has worked (and what I tried is far too extensive to list here). Is this something not possible in iOS? If anyone has any ideas how to accomplish this I would greatly appreciate hearing them. Thank you.

I've noticed that my Mac will intermittently stop performing network request. I can see these error message in Console around the time when I notice network issues.6/11/15 10:31:20.379 AM networkd[161]: -[NETProxyLookup copyURL] invalid URL scheme '5223' 6/11/15 10:32:29.139 AM networkd[161]: -[NETProxyLookup copyURL] invalid URL scheme '5223' 6/11/15 10:33:39.135 AM networkd[161]: -[NETProxyLookup copyURL] invalid URL scheme '5223' 6/11/15 10:33:47.990 AM mDNSResponder[85]: nw_interface_get_agents SIOCGIFAGENTIDS failed (errno = 6) 6/11/15 10:33:47.990 AM mDNSResponder[85]: nw_interface_get_agents SIOCGIFAGENTIDS failed (errno = 6) 6/11/15 10:34:54.126 AM networkd[161]: -[NETProxyLookup copyURL] invalid URL scheme '5223' 6/11/15 10:35:57.161 AM mDNSResponder[85]: nw_interface_get_agents SIOCGIFAGENTIDS failed (errno = 6) 6/11/15 10:35:57.161 AM mDNSResponder[85]: nw_interface_get_agents SIOCGIFAGENTIDS failed (errno = 6)Anyone else with the Beta experiencing this? If I boot from OS X 10.10.3 on the

Say I'd like to write a generic function dotProduct, something like:func dotProduct<T: FixedSizeArrayType where T.Element: BasicArithmeticType>(a: T, b: T) -> T.Element { var sum = T(0) for i in 0 ..< T.Count { sum = sum + a[i] * b[i] } return sum }This is just some haphazard pseudo code meant to illustrate the requirements for the function:It takes as arguments two fixed size arrays of equal length and element type and returns the dot product of the two arguments (the type of the return value is of course the same as the element type of the two arguments). It's also ok to make it as a method, with self replacing the first arg.I want compile time errors if I try to call it with arguments of different size/count/length or element type, and if I try to receive a return value of some other type than the element type of the two arguments.And as can be seen, The T.Element type should conform to an imaginary BasicArithmeticType protocol. This protocol is possible to write yourself, but currently the Swi

I am using a LIst picker with multiple PickerItems with a title. Currently the picker is nested in a group with a background image. However, the picker seems to have a solid black background under the text?Am I doing wrong/missing something to make it transparent? Or is this by design?

Elected to unpair my watch from my phone running iOS 9 and, now, the watch is stuck at the booting screen with only one line filled inaround the radius. I've tried to reboot the watch several times with no change. Any ideas? Steps I took include the following-unpaired watch from phone--display showed unpairing occurring-display went black-continued to check to see if unpairing was occurring-Display remained black-performed two finger restart by holding down crown and side button--display shows apple logo followed by lines around radius.one line filled inhave contacted AppleCare and, due to beta software, they will not support the device at all.