Discussion: Porting 58000 lines of D and C++ to jai, Part 0: Why and How

[FeepingCreature]

On Friday, 25 November 2022 at 08:23:22 UTC, FeepingCreature 
wrote:
> On Friday, 25 November 2022 at 07:31:59 UTC, Dukc wrote:
>> I agree with others here that he must have some problem with 
>> the compile time he could solve without switching the 
>> language. D usually compiles far faster than C++. It may be 
>> because of his memory usage, perhaps that leads to excessive 
>> disk swapping. Should be solvable too.
>
> D has a tendency to give you lots of features, invite you to 
> commit to them, then punish you somewhere way down the line 
> when you can't back out. For instance, format!`` is very 
> clever, but it's probably not beneficial for compile speed to 
> have thousands of recursive instantiations of the formatting 
> code in the compilation set.

Update: Correction! I've benchmarked it and this surprisingly 
appears to not actually make much difference. A lot of it seems 
to be going to boilerplate, unsurprisingly.

I wish `-vtemplates` gave you sum compiler time spent per 
template.