Re: Is remove safe using foreach

[Per Nordlöw via Digitalmars-d-learn]

On Monday, 12 December 2022 at 17:29:00 UTC, Steven Schveighoffer 
wrote:
Removing keys while iterating is not supported. It will break, 
in confusing ways, and possibly include a null pointer 
dereference.

IRC, the specs says that it's an error to modify a foreach 
aggregate but the compiler curretly doesn't diagnose it.