Intrusive forward list add remove by pointer #1026
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Besides remove() by reference, I provide this remove() by pointer (overload).
Scenario is as follows:
Current remove() by reference uses the comparison operator, comparing actually different instances for equality. In my use case, I have objects in the intrusive_forward_list which don't have a comparison operator defined but I have a pointer to them. This way, I can intentionally remove the actual object from the list pointed to by the pointer.