Search Issue Tracker
Fixed in 2021.2.X
NativeArray<T>.ReadOnly does not implement IEnumerable<T>
NativeArray<T> implements IEnumerable<T> allowing to use C# "foreach" syntax to iterate over it. However its read-only view (returned by calling .AsReadOnly()) does not, leading to an inconvenient inconsistency of the API.
This is especially problematic in some scenarios with DOTS.
In the attached project - and in particular in the attached screenshot -, there is a DOTS-based draft of a NBody physics system. The Job System prevents concurrent write access to the "velocityEntityChunks" array - at least in development mode - by raising an exception if I try to manipulate it directly. It forces me to call its readonly view by calling .AsReadOnly() before doing anything. For example it prevents line 39 to work via a runtime error.
My first reflex as a C# developer was to assume I could write the same "foreach" loop on the readonly view (as in line 43). However it does not compile because the type NativeArray<T>.Readonly returned by "AsReadOnly()" does not implement IEnumerable<T>. This forces me to rewrite the loop as in lines 47-50.
All about bugs
View bugs we have successfully reproduced, and vote for the bugs you want to see fixed most urgently.
- Lighting Data asset is not created when baking multiple Scenes at the same time
- Performance issues when instantiating a recognizer under UnityEngine.Windows.Speech
- Build fails with "Exception: Unity.IL2CPP.Building.BuilderFailedException: Build failed with 0 successful nodes and 0 failed ones" when building the project for iOS
- [Android] .aab Build fails when using Asset Bundles
- Builds fail without a useful error message when building a project with invalid product name