[blocks_plz]

Thanks for the AMA

1. Will the Apple's Blocks extension, which allows creation of Closures and Lambda functions, be included in C2X?

2. Are there any plans to improve the _Generic interface (to make it easy to switch on multiple arguements, etc.)?

[AaronBallman]

> 1. Will the Apple's Blocks extension, which allows creation of Closures and Lambda functions, be included in C2X?

We haven't seen a proposal to add them to C2x, yet. However, there has been some interest within the committee regarding the idea, so I think such a proposal could have some support.

> 2. Are there any plans to improve the _Generic interface (to make it easy to switch on multiple arguements, etc.)?

I haven't seen any such plans, but there is some awareness that _Generic can be hard to use, especially as you try to compose generic operations together.

[blocks_plz]

1. The reason I asked was because I remember reading the proposal as N2030[1] and N1451[2] a while back. Were these never actually presented for voting? (not sure how the commitee works)

[1]: http://www.open-std.org/jtc1/sc22/wg14/www/docs/n2030.pdf

[2]: http://www.open-std.org/jtc1/sc22/wg14/www/docs/n1451.pdf

[AaronBallman]

Ah! No, those just predate my joining the committee and haven't really come up since they were presented.

Basically, every paper that gets submitted by an author will get some amount of discussion time at the next available meeting as well as feedback from the committee on the proposal. I'm not certain what feedback these papers received (we could look through the meeting minutes for the meetings the papers were discussed at to find out, though).

[yvdriess]

+1 for the first point. Every major compiler can do the lambda-lifting transformation, either because of C++ lambda or OpenMP support. It's frustrating doing this manually while knowing the compiler supports it internally, but does not expose it natively.