Is the "C# Language Specifications" updated for C# 6.0 or 7.0 yet?

Question

C# is already 7.0. But C# Language Specifications is still for 5.0.

I realize the specifications is outdated when I couldn't find GetValueOrDefault() for a nullable type in the document.

I wonder if the specification has been updated yet, at least for 6.0?

Answer 1

The current status is:

• Microsoft's officially released spec is indeed 5.0.
• An unofficial version of the 6.0 spec exists.
• Work is being done to update the ECMA spec to 6.0 and 7.x. ECMA has released its 5.0 spec in December 2017.

But those are just specifications of the C# language, they don't specify types and members that exist in the base class library (with some exceptions that are required for various language features). Until recently, each framework defined its library on its own, but now even that is standardized, though the .Net Standard.

Answer 2

I have not found any official language specifications for C# 6 and 7 on Microsoft or ECMA site, but here are few links.

While Microsoft's documentation for C# 6 and 7 at these links is succinct, the StackOverflow pages have lots of examples, details and cover gotchas.

For C# 7

What's new in C# 7 on Microsoft website.

For C# 6

What's New in C# 6 on Microsoft website.

For C# 5 and older versions

If someone stumbles upon this question looking for C# version 5, 4 or 2 specifications, Jon Skeet at C# in Depth page has put together a nice collection of all the specifications.

P.S. I am intentionally pasting an image snapshot of his page (instead of contents in text format) so I don't take the traffic away from his page.