dcollections 1.0 and 2.0a beta released

[Steven Schveighoffer]

On Mon, 24 May 2010 16:35:03 -0400, bearophile <bearophileHUGS at lycos.com>  
wrote:

> Andrei Alexandrescu:
>> When was the last time you measured? I thought the speed has largely
>> improved since Steve integrated his work.
>
> I have timed it after that integration. I have seen a performance  
> improvement, but it's small. I can perform some syntactic benchmarks.

Performance was vastly improved for situations where one was appending to  
multiple arrays at once.  For appending to a single array in a loop, it is  
improved, but not that much.

But the main improvement was for safety.  The append operation on D's  
dynamic arrays is a tradeoff between footprint, speed, and safety.  It  
also does not and should not compromise performance on operations besides  
appending.

You will always be able to outperform the D append operation with more  
focus on the append operation, but D's array appending is fine for most  
situations.

-Steve