599 questions
The description of the part of this image says that if you add ! when a variable is substituted with nil, it crashes when the instruction is executed.(https://i.stack.imgur.com/PwDZ8.jpg)!However, in ...
After creating a bridge header, I was able to confirm that the ObjectiveC method works from swift.TestProvider.swiftimport NetworkExtension// @objc (TestProvider)class TestProvider:NEAPPushProvider { ...
That's how we put them together.However, when I run, image1~image6 appears as nil (there is an image called sample in the project).I would appreciate it if you could tell me the cause.let image1 = UII...
As I am doing the Swift program, I am also concerned about warning, so please let me ask you a question without thinking.I have laid out the UIView on the storyboard and placed it using Constraints.I ...
I am trying to create a PDF using PDFKit in swift4.0.The PDF itself was easy to create, but when I opened the contents, it turned upside down.Some specification may be insufficient/extra.Please let me...
Due to background processing, the order of operation of the functions below has changed and the return value of the functions is not expected.let task=NSURLSession.sharedSession().dataTaskWithRequest....
You may see share(replay:1) using BehaviorRelay on RxSwift.let relay=RxCocoa.BehaviorRelay<String>(value:)variable:RxSwift.Observable<String>{ return relay .observeOn(MainScheduler.instan...
I got the book information using Google API.{totalItems:int, items:[{kind:books#volume, volumeInfo: {title: hoge, authors: [name, publishedDate: 2014-06-20}]}I don't know how to extract the c...
Please tell me the difference between as Int and Int().If you use as Hoge when you cast with swift, it will be cast.Also, Int() is recognized as a function that casts into Int.I looked at Apple's offi...
An error occurs when you try to substitute the structure properties with the value received by the init argument.In selected=state on the second line of initself'used before all stored properties are ...
| « | - 54 - | » |
© 2024 OneMinuteCode. All rights reserved.