Let conditional operator ?: work on nullable

[Thaina]

Sometimes we have bool? condition. Such as dictionary?.TryGetValue(key,out value)

When I want it to return dictionary?.TryGetValue(key,out value) ? value : null it cause error

Maybe we should support ?:?? like this?

return dictionary?.TryGetValue(key,out value) ? value : null ?? null

or maybe just

/// Nullable<bool> ? true : false : null
return dictionary?.TryGetValue(key,out value) ? value : null : null`

[gafter]

Language feature requests no longer go in this repository. They go in https://github.com/dotnet/csharplang

This particular issue is already on the language design team's radar. See dotnet/csharplang#33