On 11/20/2012 4:33 AM, Paulo Pinto wrote:
On Tuesday, 20 November 2012 at 09:53:31 UTC, Walter Bright wrote:
On 11/19/2012 11:17 PM, Jacob Carlborg wrote:
On 2012-11-20 04:01, Walter Bright wrote:
I know. I just pointed this out as I suspect this will not improve
compile times more than precompiled headers do.
The compiler will compile the header and create a some kind of map file from it.
This map file will be cached and later used during the compilation process. I
don't know how this compares to precompiled headers.
It's really what precompiled headers are.
Except there is no standard way of doing it.
Exactly, hence my comment about it "legitimizing" them.
The work being paved by clang as base for the C++ modules, is a way to use map
files as transition into a full module system.
It is to be expected that if C++17 gets modules, and C++ by that time still
matters, header and map files could possibly be ditched way (deprecated) in the
following standard.
Personally I hope that in 2017 we already something much better in place, like
D. :)
Since people already use precompiled headers with C++, I don't think this change
has much chance of making it compile faster.
