swift

英文: In Swift 5.7+ why is `if let name = name { }` preferred instead of `if let newName { }`? 问题 I’m ...

英文: UIPIckerview strange display behaviour 问题 I have an app written a few years ago using UIPickerVi...

英文: Function call to change properties of an object does not update the view 问题 I understand your re...

英文: Array of protocols using type erasure cannot conform to Hashable or Equatable protocols 问题 I'm r...

英文: I cannot set permissions to read a file in my project directory using Xcode 14 and Swift 5 on ma...

英文: Swift Architectural Problem with Protocol and Inheritance 问题 I'm more familiar with C++ than I a...

英文: How do I iterate through a dictionary to find the highest value from a Key-Value pair using Swif...

英文: How to save what users write in SwiftUI app? 问题 我想要添加保存用户所写内容的功能，这样，如果他们返回主页或关闭应用然后重新打开，他们所写的内容仍...

英文: How to replace array values with new value in same index in swift 问题 I am showing dropdown in ta...

英文: meaning of this code: return self.desk[number]![alpha] 问题 self.desk[number]![alpha] 中的 ! 表示强制解包（...