# šŸŽ¤ General Discussion **URL:** https://forums.kodeco.com/c/general/16.md?page=49 [Latest](https://forums.kodeco.com/latest.md) Ā· [Categories](https://forums.kodeco.com/categories.md) Ā· [Tags](https://forums.kodeco.com/tags.md) **Page:** 50 --- ## [Wrapping optional object](https://forums.kodeco.com/t/wrapping-optional-object/57327)
**Author:** [@caropere](https://forums.kodeco.com/u/caropere)\ **Replies:** 3\ **Last updated:** [December 11, 2018, 10:57am UTC](https://forums.kodeco.com/t/wrapping-optional-object/57327 "2018-12-11T10:57:54Z")
Hi everybody, Iā€™d like to understand the difference between (objectname?.description)! and objectname!.description Thank you in advance Carola --- ## [Watch OS4 LTE connection](https://forums.kodeco.com/t/watch-os4-lte-connection/35475)
**Author:** [@nan2131](https://forums.kodeco.com/u/nan2131)\ **Replies:** 0\ **Last updated:** [October 11, 2017, 7:33pm UTC](https://forums.kodeco.com/t/watch-os4-lte-connection/35475 "2017-10-11T19:33:14Z")
Hi I am working on one of application for Apple Watch in objective c since their is new update for Watch OS4 . I am trying to implement When their is LTE connection apple should work either way data should transfer switcā€¦ --- ## [How to create animation like music watch app?](https://forums.kodeco.com/t/how-to-create-animation-like-music-watch-app/36762)
**Author:** [@simform](https://forums.kodeco.com/u/simform)\ **Replies:** 0\ **Last updated:** [November 21, 2017, 11:22am UTC](https://forums.kodeco.com/t/how-to-create-animation-like-music-watch-app/36762 "2017-11-21T11:22:42Z")
I am facing an issue in creating UI like music watch app. I posted a question in StackOverflow. But not getting any proper solutions. I posted a video on StackOverflow. https://stackoverflow.com/q/47410224/4128762 Pleā€¦ --- ## [Flappy Felipe Video Tutorial : (Swift4.2) Update](https://forums.kodeco.com/t/flappy-felipe-video-tutorial-swift4-2-update/56902)
**Author:** [@emindagci](https://forums.kodeco.com/u/emindagci)\ **Replies:** 6\ **Last updated:** [December 11, 2018, 1:11am UTC](https://forums.kodeco.com/t/flappy-felipe-video-tutorial-swift4-2-update/56902 "2018-12-11T01:11:45Z")
Can not solve this problem ? :thinking: Video tutorial: Flappy Felipe for Swift 3 I use Xcode 10.1 Swift 4.2 Binary operator ā€˜+=ā€™ cannot be applied to two ā€˜CGPointā€™ operands func updateForeground(){ worldNodeā€¦ --- ## [How to change images and colors of a custom framework?](https://forums.kodeco.com/t/how-to-change-images-and-colors-of-a-custom-framework/57180)
**Author:** [@wellbranding](https://forums.kodeco.com/u/wellbranding)\ **Replies:** 1\ **Last updated:** [December 8, 2018, 1:53am UTC](https://forums.kodeco.com/t/how-to-change-images-and-colors-of-a-custom-framework/57180 "2018-12-08T01:53:30Z")
Hello, what would be the best way for enabling to edit UI elements(images, colours) of my framework inside the app? For instance my framework has 3 VC and several storyboards. How can I enable such functionality that anā€¦ --- ## [PDF Image Is Not Visible](https://forums.kodeco.com/t/pdf-image-is-not-visible/47401)
**Author:** [@jport1130](https://forums.kodeco.com/u/jport1130)\ **Replies:** 1\ **Last updated:** [December 8, 2018, 1:48am UTC](https://forums.kodeco.com/t/pdf-image-is-not-visible/47401 "2018-12-08T01:48:46Z")
I am using HTML to create a PDF. When I preview my PDF the image is visible, but when I PDF the view the image is not visible. Does anyone have any suggestions? let logoImageURL = ā€œFile\_PDF@2x.pngā€ HTMLContent = HTMLā€¦ --- ## [Speech recognition with timer in Swift?](https://forums.kodeco.com/t/speech-recognition-with-timer-in-swift/45335)
**Author:** [@santhoshios](https://forums.kodeco.com/u/santhoshios)\ **Replies:** 1\ **Last updated:** [December 8, 2018, 1:44am UTC](https://forums.kodeco.com/t/speech-recognition-with-timer-in-swift/45335 "2018-12-08T01:44:09Z")
How can we get the data using speech recognition using timer, suppose i say wow it will display on to textfield --- ## [Please i have question on photo vault app in swift language](https://forums.kodeco.com/t/please-i-have-question-on-photo-vault-app-in-swift-language/15792)
**Author:** [@almass](https://forums.kodeco.com/u/almass)\ **Replies:** 1\ **Last updated:** [December 8, 2018, 1:40am UTC](https://forums.kodeco.com/t/please-i-have-question-on-photo-vault-app-in-swift-language/15792 "2018-12-08T01:40:47Z")
Hello , I Hope All Is Well Please I Have Create Photo Vault App In Swift Language And Am Try To Get All Albums In My App Like Photos App In iPhone Am Using The Photos Framework But I Couldnā€™t Get The Albums I Donā€™t Kā€¦ --- ## [In ios1,how to modify the code so the slider doesn't reset the halfway but start from the same position in each round?](https://forums.kodeco.com/t/in-ios1-how-to-modify-the-code-so-the-slider-doesnt-reset-the-halfway-but-start-from-the-same-position-in-each-round/15331)
**Author:** [@felixli](https://forums.kodeco.com/u/felixli)\ **Replies:** 1\ **Last updated:** [December 8, 2018, 1:38am UTC](https://forums.kodeco.com/t/in-ios1-how-to-modify-the-code-so-the-slider-doesnt-reset-the-halfway-but-start-from-the-same-position-in-each-round/15331 "2018-12-08T01:38:01Z")
--- ## [Cannot convert my monthly subscripton to the yearly cyber offer](https://forums.kodeco.com/t/cannot-convert-my-monthly-subscripton-to-the-yearly-cyber-offer/56347)
**Author:** [@chicago](https://forums.kodeco.com/u/chicago)\ **Replies:** 8\ **Last updated:** [December 7, 2018, 7:52pm UTC](https://forums.kodeco.com/t/cannot-convert-my-monthly-subscripton-to-the-yearly-cyber-offer/56347 "2018-12-07T19:52:47Z")
I recently had to change my CC number due to fraud. That said I would like to take advantage of the cyber Monday yearly subscription of $99. However, every time attempt to upgrade my CC creds the only option offered isā€¦ --- ## [Devices and simulator not Working](https://forums.kodeco.com/t/devices-and-simulator-not-working/56812)
**Author:** [@hussien](https://forums.kodeco.com/u/hussien)\ **Replies:** 6\ **Last updated:** [December 6, 2018, 5:28pm UTC](https://forums.kodeco.com/t/devices-and-simulator-not-working/56812 "2018-12-06T17:28:30Z")
Hello and really thanks for this teaching way and I like your talented way in Explain and sorting information. and now I finish this first course in Road but I have some small issue with Devices and simulator cuz my appā€¦ --- ## [Inspire Me to Find it!](https://forums.kodeco.com/t/inspire-me-to-find-it/57002)
**Author:** [@milad](https://forums.kodeco.com/u/milad)\ **Replies:** 3\ **Last updated:** [December 6, 2018, 9:07am UTC](https://forums.kodeco.com/t/inspire-me-to-find-it/57002 "2018-12-06T09:07:13Z")
Hello guys, Iā€™m SE student, i decided to work on an iOS app for my Bachelor degreeā€™s final project, feel free inspire me with your great ideas cheers --- ## [iOS without storyboard?](https://forums.kodeco.com/t/ios-without-storyboard/56451)
**Author:** [@anthonycoi](https://forums.kodeco.com/u/anthonycoi)\ **Replies:** 6\ **Last updated:** [December 6, 2018, 7:35am UTC](https://forums.kodeco.com/t/ios-without-storyboard/56451 "2018-12-06T07:35:23Z")
Hello, I have seen alot videos about creating iOS app by using UI programmatically without using storyboard. Will raywenderlich.com consider to release any book or course like that? That will really helpful for peopleā€¦ --- ## [Chapter 4 SqueezeNet](https://forums.kodeco.com/t/chapter-4-squeezenet/56988)
**Author:** [@scy](https://forums.kodeco.com/u/scy)\ **Replies:** 1\ **Last updated:** [December 6, 2018, 7:25am UTC](https://forums.kodeco.com/t/chapter-4-squeezenet/56988 "2018-12-06T07:25:25Z")
On chapter 4 at page:136 there is written that above: SqueezeNet exports a Core ML model ~4.7MB, so itā€™s a better option. But VisionFeaturePrint\_Screen is built into iOS 12, so it produces a much smaller model ā€” only ~4ā€¦ --- ## [Networking layer tutorial](https://forums.kodeco.com/t/networking-layer-tutorial/56026)
**Author:** [@swiftwitcher](https://forums.kodeco.com/u/swiftwitcher)\ **Replies:** 5\ **Last updated:** [December 5, 2018, 7:25am UTC](https://forums.kodeco.com/t/networking-layer-tutorial/56026 "2018-12-05T07:25:20Z")
Hello, So i just finished the learning path for iOS, and i know a little bit about MVC, but i canā€™t find a tutorial here with the networking layer described/explained. Do we have one here and iā€™m just missing it? Thanā€¦ --- ## [Bull's Eye Tutorial - Score is not adding correctly](https://forums.kodeco.com/t/bulls-eye-tutorial-score-is-not-adding-correctly/56645)
**Author:** [@hunterfitch](https://forums.kodeco.com/u/hunterfitch)\ **Replies:** 4\ **Last updated:** [November 30, 2018, 4:25pm UTC](https://forums.kodeco.com/t/bulls-eye-tutorial-score-is-not-adding-correctly/56645 "2018-11-30T16:25:47Z")
Hello there! Iā€™ve just completed the portion of the Bullā€™s Eye tutorial where weā€™ve added 100 additional points for a perfect score and 50 points for a 99ā€¦ the score on the alert menu is correct. For instance if I get a ā€¦ --- ## [Face Recognition](https://forums.kodeco.com/t/face-recognition/16786)
**Author:** [@nurzhan](https://forums.kodeco.com/u/nurzhan)\ **Replies:** 1\ **Last updated:** [November 30, 2018, 5:43am UTC](https://forums.kodeco.com/t/face-recognition/16786 "2018-11-30T05:43:31Z")
Hello everyone! Iā€™d like to ask is there any facial recognition API available to create app with this feature. Iā€™m looking for something like Snapchat or MSQRD with detection of face details like mouth, nose, eyes and eā€¦ --- ## [RESTful API ....what to know?](https://forums.kodeco.com/t/restful-api-what-to-know/55456)
**Author:** [@oaranger](https://forums.kodeco.com/u/oaranger)\ **Replies:** 4\ **Last updated:** [November 30, 2018, 5:28am UTC](https://forums.kodeco.com/t/restful-api-what-to-know/55456 "2018-11-30T05:28:21Z")
Hi everyone, I see quite many iOS jobs are listing ā€œRESTful APIā€ as one of the main requirements I know iOS Apprenticeā€™s StoreSearch chapter was teaching how to parse JSON data from web services. Other than that, what ā€¦ --- ## [I will like build a App PDF reader app](https://forums.kodeco.com/t/i-will-like-build-a-app-pdf-reader-app/56536)
**Author:** [@josephd.rivera](https://forums.kodeco.com/u/josephd.rivera)\ **Replies:** 3\ **Last updated:** [November 30, 2018, 5:16am UTC](https://forums.kodeco.com/t/i-will-like-build-a-app-pdf-reader-app/56536 "2018-11-30T05:16:18Z")
Hello everyone. I would like to create a PDF reader app like iBooks. I would like to do this in Swift. Can anyone point me to the right direction. To start learning how to build this app Iā€™m currently going through all tā€¦ --- ## [Why i can't use singleton? Why it is bad design pattern?](https://forums.kodeco.com/t/why-i-cant-use-singleton-why-it-is-bad-design-pattern/56168)
**Author:** [@wellbranding](https://forums.kodeco.com/u/wellbranding)\ **Replies:** 2\ **Last updated:** [November 30, 2018, 4:50am UTC](https://forums.kodeco.com/t/why-i-cant-use-singleton-why-it-is-bad-design-pattern/56168 "2018-11-30T04:50:52Z")
Hello, I came from Android world and still feel confused in IOSā€¦ The reason is design pattern. For instance one of coolest and actually preferable by Google way of developing android app is using MVVM + repository. Basicā€¦ --- ## [Rotate UIView with constraints](https://forums.kodeco.com/t/rotate-uiview-with-constraints/56121)
**Author:** [@efthemiosprime](https://forums.kodeco.com/u/efthemiosprime)\ **Replies:** 2\ **Last updated:** [November 30, 2018, 4:45am UTC](https://forums.kodeco.com/t/rotate-uiview-with-constraints/56121 "2018-11-30T04:45:27Z")
Iā€™m trying to achieve this: I have tried rotating it with transform such as: greenView.transform = CGAffineTransform(rotationAngle: -(.pi/2)) But canā€™t achieve the desire effect. Can anyone please, let me know on ā€¦ --- ## [Convert timestamp from Firebase to readable date](https://forums.kodeco.com/t/convert-timestamp-from-firebase-to-readable-date/55588)
**Author:** [@stianand](https://forums.kodeco.com/u/stianand)\ **Replies:** 2\ **Last updated:** [November 30, 2018, 4:42am UTC](https://forums.kodeco.com/t/convert-timestamp-from-firebase-to-readable-date/55588 "2018-11-30T04:42:21Z")
I would like to convert a timestamp posted in firebase to readable data. I am able to read the timestamp, but not able to convert it, or append it to an array. This is my progress: var orderDateHistoryArray = \[String:Iā€¦ --- ## [XCode Crashes when adding image to Tile Set](https://forums.kodeco.com/t/xcode-crashes-when-adding-image-to-tile-set/44409)
**Author:** [@dmckinney14](https://forums.kodeco.com/u/dmckinney14)\ **Replies:** 5\ **Last updated:** [November 30, 2018, 4:18am UTC](https://forums.kodeco.com/t/xcode-crashes-when-adding-image-to-tile-set/44409 "2018-11-30T04:18:51Z")
This is the error message I receive when Xcode crashes as I try to add images to a tile set. The images came from Itch Co and are part of the Kenney.nl asset bundle mentioned in the duck tile map game on raywenderlich.coā€¦ --- ## [How to Add a Method to Core Data Model Subclasses](https://forums.kodeco.com/t/how-to-add-a-method-to-core-data-model-subclasses/56206)
**Author:** [@msuboh](https://forums.kodeco.com/u/msuboh)\ **Replies:** 2\ **Last updated:** [November 29, 2018, 9:32am UTC](https://forums.kodeco.com/t/how-to-add-a-method-to-core-data-model-subclasses/56206 "2018-11-29T09:32:10Z")
want to add a method or a custom attribute to the generate subclass Entity. //---------------- Books+CoreDataClass.swift ---------- import Foundation import CoreData @objc(Books) public class Books: NSManagedObject ā€¦ --- ## [Why i cant use singletons? Why it is bad design pattern?](https://forums.kodeco.com/t/why-i-cant-use-singletons-why-it-is-bad-design-pattern/56166)
**Author:** [@wellbranding](https://forums.kodeco.com/u/wellbranding)\ **Replies:** 1\ **Last updated:** [November 28, 2018, 6:56pm UTC](https://forums.kodeco.com/t/why-i-cant-use-singletons-why-it-is-bad-design-pattern/56166 "2018-11-28T18:56:14Z")
Hello, I have folowed this tutorial https://www.raywenderlich.com/5370-grand-central-dispatch-tutorial-for-swift-4-part-1-2 and was really happy about whole ideaā€¦ I build an app which uses similar flow. There are three vā€¦ --- ## [Anyone familiar with StoreKit?](https://forums.kodeco.com/t/anyone-familiar-with-storekit/56195)
**Author:** [@tjl037](https://forums.kodeco.com/u/tjl037)\ **Replies:** 1\ **Last updated:** [November 24, 2018, 9:29pm UTC](https://forums.kodeco.com/t/anyone-familiar-with-storekit/56195 "2018-11-24T21:29:25Z")
After following the auto-renewable subscriptions course, I found it far too confusing - and throws in a lot of information my app just doesnā€™t need. I really just need something simple that shows an alert pop up after thā€¦ --- ## [Is subclass of UIViewController a singleton?](https://forums.kodeco.com/t/is-subclass-of-uiviewcontroller-a-singleton/33293)
**Author:** [@brower](https://forums.kodeco.com/u/brower)\ **Replies:** 1\ **Last updated:** [August 15, 2017, 2:50pm UTC](https://forums.kodeco.com/t/is-subclass-of-uiviewcontroller-a-singleton/33293 "2017-08-15T14:50:05Z")
When I subclass UIViewController to use the subclass as the Custom Class of a view controller in Interface Builder, is that subclass a singleton? How do I find out? How would I make sure to make the object of the classā€¦ --- ## [Accessing a Struct that is placed in a separate swift file](https://forums.kodeco.com/t/accessing-a-struct-that-is-placed-in-a-separate-swift-file/55922)
**Author:** [@dukeobass](https://forums.kodeco.com/u/dukeobass)\ **Replies:** 4\ **Last updated:** [November 22, 2018, 1:10am UTC](https://forums.kodeco.com/t/accessing-a-struct-that-is-placed-in-a-separate-swift-file/55922 "2018-11-22T01:10:42Z")
This probably should have been placed in the Swift Discussion Area because I didnā€™t make clear that is language Iā€™m using. When creating a Struct inside itā€™s own .swift file, what do I need to do have total access to itā€¦ --- ## [Swift vs Objective-C. Which iOS Language To Choose](https://forums.kodeco.com/t/swift-vs-objective-c-which-ios-language-to-choose/54369)
**Author:** [@bessalitskykh](https://forums.kodeco.com/u/bessalitskykh)\ **Replies:** 4\ **Last updated:** [November 20, 2018, 8:43am UTC](https://forums.kodeco.com/t/swift-vs-objective-c-which-ios-language-to-choose/54369 "2018-11-20T08:43:16Z")
Swift vs Objective-C - which programming language should you choose for iOS app development? With the popularity of the iOS platform and the higher payment ability of Apple users, businesses focus their strategic effortsā€¦ --- ## [SceneKit: Moving Reference SCNNode with panning](https://forums.kodeco.com/t/scenekit-moving-reference-scnnode-with-panning/55284)
**Author:** [@efthemiosprime](https://forums.kodeco.com/u/efthemiosprime)\ **Replies:** 2\ **Last updated:** [November 18, 2018, 1:58am UTC](https://forums.kodeco.com/t/scenekit-moving-reference-scnnode-with-panning/55284 "2018-11-18T01:58:31Z")
I have 2 scene that i drag into a new scene please see image for the setup. What iā€™m trying to do is to move position of the Large\_Needle with panning. Iā€™m referencing the large needle node like this: var largeNeedlā€¦ [Previous page](https://forums.kodeco.com/c/general/16.md?page=48) [Next page](https://forums.kodeco.com/c/general/16.md?page=50)