How to remove all characters from a string, except the integers?

[matheus]

On Friday, 4 March 2022 at 20:33:08 UTC, H. S. Teoh wrote:
> On Fri, Mar 04, 2022 at 07:51:44PM +0000, matheus via ...
> I don't pay any attention to DMD when I'm doing anything 
> remotely performance-related. Its optimizer is known to be 
> suboptimal. :-P

Yes, in fact I usually do my coding/compiling with DMD because is 
faster, then I go for LDC for production and speed.

Matheus.