On Sunday, 24 August 2025 at 18:21:50 UTC, monkyyy wrote:
On Sunday, 24 August 2025 at 13:59:46 UTC, Andrey Zherikov
wrote:
On Wednesday, 20 August 2025 at 15:33:45 UTC, monkyyy wrote:
once again dconf contains people who talk about compile speed
as if it can be slow
What are they doing? Even my worse compile time abstraction
was O(n^2) or maybe some awful string concatenation of an
entire file; still effectively instant
Wheres a 1000 line file that does something meta
programmingly useful that takes 5 minutes?
Do they lose track of what the compiler is even doing? Do
they turn off the template recursion depth limit?
My recent experience: removing usage of SumType and replacing
it with my own solution reduced dmd memory usage from 6GB to
1.7GB and improved compilation speed.
What sort of difference did you do? Did the memory usage matter
for speed at all?
I was speaking about [this
change](https://github.com/andrey-zherikov/argparse/pull/214)
where I replaced `std.SumType` with my own implementation using
`union`.
So I got lower memory usage and faster compilation.
