Issue 748: The is_abstract type trait is defined by reference to 10.4.

Created on 2007-10-10.00:00:00 last changed 183 months ago

msg3645 (view)

Date: 2010-10-21.18:28:33

Proposed resolution:

Core has clarified that the definition abstract is adequate. Issue withdrawn by submitter. NAD.

msg3644 (view)

Date: 2007-10-10.00:00:00

I am trying to decide is a pure virtual function is a necessary as well as sufficient requirement to be classified as abstract?

For instance, is the following (non-polymorphic) type considered abstract?

struct abstract {
protected:
 abstract(){}
 abstract( abstract const & ) {}
 ~abstract() {}
};

(Suggested that this may be NAD, with an editorial fix-up from Pete on the core wording to make clear that abstract requires a pure virtual function)