On Sunday, 7 September 2025 at 12:29:08 UTC, Robert Schadek wrote:
I spend one day at dconf this year and removed wstring and
dstring support from
std.format to improve compile speed. std.format.FormatSpec is
no longer a template
on the character type, and the bitfield template was removed as
well.
The dub package can be found here
https://code.dlang.org/packages/std2_format
https://github.com/burner/std2.format
When compiling the below format call with ldc and -ftime-trace
```
import std2.format;
//import std.format;
void main(){
string s = format("Hello %s %s %.2f", "World", 1337, 13.37);
assert(s == "Hello World 1337 13.37", s);
}
```
The overall compile time decreases from 290ms to 223ms and the
frontend time for
the format call goes from 71ms to 23ms.
Currently, alias this and toString tests fail. And I can't
really figure out why.
Also some float tests fails.
PR's are always welcome.
Meta: Removing wstring and dstring support from std.format for
phobos 3 should be looked at IMHO.
wouldnt be far faster to just rip out all the c api complexity
and just do a simple sane api?
