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# 使用 Property Wrapper 为 Codable 解码设定默认值 | OneV's Den
本文介绍了一个使用 Swift Codable 解码时难以设置默认值问题,并利用 Property Wrapper 给出了一种相对优雅的解决方式,来在 key 不存在时或者解码失败时,为某个属性设置默认值。这为编解码系统提供了更好的稳定性和可扩展性。最后,对 enum 类型在某些情况下是否
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Hi,
you might want to change your chosen fix for the "Immutable property will not be decoded because it is declared with an initial value which cannot be overwritten" problem with the UUID `id` pro…
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## Problem
We're using `datamodel-code-generator` for our Python code at @airbytehq, and I was about to make a little experimental app with Swift on our protocol, and realized there is not great wa…
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## 在 SwiftData 模型中使用 Codable 和枚举的注意事项
相较于 Core Data,SwiftData 在数据模型的构建方式上实现了根本性的革新。它不仅支持纯代码的声明方式,还允许在模型中直接使用符合 `Codable` 协议的类型及枚举类型,这些都是其显著的新特性。许多开发者都倾向于利用这些新功能,因为它们似乎非常契合 Swift 语言的声明风格。然而,若对这些新功能的…
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Why members of CategoryMealItem, MealModel are nullable?
It seems that api send not nullable
Why var?
It's better to use immutable structures with members as "let" constants.
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I'm trying to store struct object but not work.
```
struct InstagramApiUser: Codable {
var access_token: String
var user_id: Int
}
```
storing with:
```
let json = try JSONDecoder()…
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TODO
Look for all differences with codable and list them.
## Codable
- 1 parsing fails all fails
- Fine grained error handling
- Need 1 custom parsing need to write all encodable method
- De…
s4cha updated
5 years ago
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- [x] I have read the [documentation](https://swiftpackageindex.com/SwiftyLab/MetaCodable/main/documentation/metacodable).
**Describe the bug**
Below code works well.
working code
```swift…
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## Is your feature request related to a problem?
You don't support Codable when using `capture` for events.
## Describe the solution you'd like
Getting error: key does not conform to NSCodin…
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- Encodable과 Decodable 프로토콜의 역할은 무엇인가요?
- JSON 데이터를 커스텀 객체로 디코딩하는 방법을 설명해주세요.
- Codable 프로토콜을 채택한 타입에서 인코딩/디코딩 키를 커스터마이징하는 방법은 무엇인가요?