This is an unofficial snapshot of the ISO/IEC JTC1 SC22 WG21 Core Issues List revision 110c. See for the official list.


820. Deprecation of export

Section: Clause 13  [temp]     Status: CD2     Submitter: UK     Date: 3 March, 2009

N2800 comment UK 115

[Voted into WP at March, 2010 meeting as document N3065.]

Exported templates were a great idea that is generally understood to have failed. In the decade since the standard was adopted, only one implementation has appeared. No current vendors appear interested in creating another. We tentatively suggest this makes the feature ripe for deprecation. Our main concern with deprecation is that it might turn out that exported constrained templates become an important compile-time optimization, as the constraints would be checked once in the exported definition and not in each translation unit consuming the exported declarations.

Notes from the March, 2010 meeting:

It was decided to remove export altogether, rather than deprecating it.