Smartphones and D

[Jonathan M Davis]

On Sunday 30 January 2011 04:02:14 Trass3r wrote:
> > Reading this newsgroup revealed that D uses some kind of thing called
> > 'lowerings' for optimizing high level features.
> 
> Haven't heard of that.

Examples would be how

date += duration;

becomes

date.opOpAssign!"+="(duration);

or how

{
    //... code1
    scope(exit) { /* code2 */}
    //... code2
}

becomes something along the lines

{
    //... code1
    try
    {
        //... code3
    }
    finally
   {
        /* code2 */
    }
}

Some of the newer features are "lowered" into more code using more basic 
features. This makes them much easier to implement. Andrei discusses it a bit in 
TDPL. I'm not sure that it really helps optimize anything though. It just makes 
it easier to implement new features by defining them in terms of older, more 
basic, already implemented features.

- Jonathan M Davis