Opt-in Nullable Reference Types by default in templates

[hez2010]

Opt-in Nullable Reference Types by default

Nullable Reference Types is a significant feature to decrease the possibility of bugs and it can improve robustness.
People who don't follow the Microsoft DevBlogs even don't know the existence of this feature, why not opt-in this feature in dotnet new template by default? If it was opted-in by default, new projects will consider the nullable issues, and in the future, most projects will not face the unexpected NullableReferenceException.

Solution

Make all existing templates in dotnet new opt-in Nullable Reference Types by default.

[tub5]

When C# 8 is released (not in preview mode), the Nullable element will be added by new project templates. Until then, you'll need to add it manually.
Found here

[safern]

cc: @terrajobst @cartermp -- I believe this is the plan for .NET 5, or am I miss remembering?

[cartermp]

This is the tentative plan, yes. But that is all going to depend on how we feel about the experience w.r.t first-party and third-party annotations and editor tooling.

[Gnbrkm41]

Curious what the status on this is? It still seems to lack the feature by default.

Edit: Possibly pushed to .NET 6 - though it's not an official statement

[mairaw]

@jaredpar can you give an update here?

[vlada-shubina]

This was implemented in #3359, suggesting to close - let me know if you have any objections.

[terrajobst]

Thanks @vlada-shubina!