Re: Removing the assignable requirement from stl list elements

"kanze" <>
10 Oct 2006 08:30:55 -0400
<> wrote:

Kevin Lin wrote:

Denise Kleingeist wrote:


I would like to provide example of Usefullness:

class Mutex; // with some RAII implementation

std::list< Mutex > mutexes;

// Populate and use on demand

Mutex DOES NOT have copy semantic...
Have Mutexes be organized, allocated and destroyed by the
container I see usefull. For example I would like to iterate
through, and check.

For deadlock detection, for example. Yes, it is useful.

On the other hand, it is a very special use, which doesn't fit
into the concept of the STL in general---you can't make it work
with std::vector, for example. It presupposes that each element
of the list has identity, which is only true for std::list (and,
one could argue, only incidentally true there). I'm not sure
that making a lot of special rules for std::list, just to
support this "unorthodox" use, is a good idea.

James Kanze GABI Software
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