Declare immutable structs as readonly – readonly struct rules lack _init-only_ setter option #27199
Description
All properties must be read-only, including auto-implemented properties.
C# 9.0 init-only setter option is not mentioned here.
From readonly struct
All data members of a readonly struct must be read-only as follows:
- Any field declaration must have the readonly modifier
- Any property, including auto-implemented ones, must be read-only. In C# 9.0 and later, a property may have an init accessor.
Document Details
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- ID: ac8804c7-6acd-ab2a-4e14-0b99265969a5
- Version Independent ID: 183efcbd-a781-d303-f9cd-1c22da1676de
- Content: Write safe and efficient C# code
- Content Source: docs/csharp/write-safe-efficient-code.md
- Product: dotnet-csharp
- Technology: csharp-advanced-concepts
- GitHub Login: @BillWagner
- Microsoft Alias: wiwagn