On Friday, 26 June 2015 at 19:40:41 UTC, rsw0x wrote:
On Friday, 26 June 2015 at 19:26:57 UTC, Jack Stouffer wrote:
Thanks for the reply! I understand the reasoning now.
On Friday, 26 June 2015 at 18:46:03 UTC, Adam D. Ruppe wrote:
2) interfaces have an associated runtime cost, which ranges
wanted to avoid. They come with hidden function pointers and
if you actually use it through them, you can get a
performance hit.
How much of a performance hit are we talking about? Is the
difference between using an interface and not using one
noticeable?
It can be in a tight loop.
http://eli.thegreenplace.net/2013/12/05/the-cost-of-dynamic-virtual-calls-vs-static-crtp-dispatch-in-c
this is for C++, but it applies directly to D. Interestingly,
CRTP is a gigantic C++ hack that D gets for free with alias
this.
In my code I need to use polymorphism. But, if I replace the code
for my interface inheritance with an inherit of an class that
implements empty methods and my methods just override the empty
ones I get an essentially free performance boost 0_0? Good to
know; thanks for the link.
