On Thursday, 6 August 2020 at 01:23:33 UTC, Per Nordlöw wrote:
How does the memory usage and speed of this code compare to the variant that uses template instantiations?
I haven't tested this specifically, but similar tests have come in at like 1/10th the memory and compile time cost.
There is one template instance here per argument list though, and that template includes the implementation function. The eponymous version Ali posted will perform a bit better than my version because the compiler can see it will never need code generation.
Still for small argument lists the Phobos one might do better, but for larger ones, the ctfe version should be much better. So on average Ali's version is almost certain to win in my experience.
