my blog on recent code and dmd performance tips

[Arine]

On Wednesday, 13 May 2020 at 01:57:18 UTC, Adam D. Ruppe wrote:
> I try to write something on this once a week, though longer 
> posts like this tend to be less common (and some weeks, like 
> last week, I post nothing at all...), but I rarely post here 
> since I don't want to be super spammy.
>
> However a reminder here my D blog is still active and if you 
> use my libs you might want to check in once a month or so and 
> if you don't, the general D tips are probably interesting 
> enough for you to skim anyway every two or three months.
>
> Anyway, I wrote something longer this time and talked both 
> about my libs and about some dmd compile speed/ram tips in 
> general so might be worth a skim by many of you:
>
> http://dpldocs.info/this-week-in-d/Blog.Posted_2020_05_11.html
>
> (and a couple weeks ago I wrote about the script lang too which 
> if you are at all interested in that it might be fun to look 
> at: 
> http://dpldocs.info/this-week-in-d/Blog.Posted_2020_04_27.html 
> you can subclass D classes in script and reuse them from D! 
> pretty cool if i do say so myself lol)

Yah static foreach is slow for sure. Part of the problem is that 
it literally just runs a lambda at CTFE that creates a tuple. So 
that static foreach 0 .. 10000 literally creates a tuple with 
10000 elements. Might even create an array first that then gets 
converted to that tuple. So yah, not very efficient at all.