Andrey Semashev wrote:
Hello Tobias,
Tuesday, April 3, 2007, 9:02:45 PM, you wrote:
Hi,
in_place_factory can be quite useful, as I found out recently. However, here are some suggestions to make it event better:
1. add a construction mechanism for arrays
2. add a note to the docs about deduction and using boost::ref
3. have the static 'apply' member function return the pointer to the constructed object - just like the placement new operator
4. use file iteration instead of BOOST_PP_REPEAT for maintainability
If I may, I'd like to add:
5. add in_place_factory and typed_in_place_factory for zero constructor arguments.
Quick discussion: Often the reason against nullary function overloads is the earlier point of instantiation (nullary functions can't be templates), but that shouldn't be the problem here because 'in_place_factory's nested 'apply' is a template and 'typed_in_place_factory' is complete enough to be instantiated. For the 'inline in_place_factory0 in_place()' function the explicit 'inline' keyword is needed, however, not to break the ODR. OK. It seems reasonable and it seems there are no unsolvable problems around, so let's add it ;-).
I remember someone mentioned this before, but I can't remember any one answered.
That probably means that there's no maintainer. If that's so, I'd pick up this role. Regards, Tobias