Andrew ZonenbergMar 27
Is there a name for a design paradigm where a class has a static "list of all objects of my own type" member, inserted by the constructor and removed by the destructor, and you can iterate over them for $REASONS?
Show threadKen MilmoreMar 27
@azonenberg If it's C++ then a member can't be both static and set up by the constructor of the class it's in. I'm sure you know this but I'm just being pedantic.
We use that pattern a lot though, sometimes just to contain a fixed list of constants, sometimes a collection of pointers to members that have to be visited in some way. So I'd like to know the name for it too.
Show threadAndrew ZonenbergMar 27

@kbm0 I think we're describing something different.

It's a static std::set<T> and the constructor does a emplace(this) and destructor erase(this). With appropriate locking if you're multithreading you get a real time snapshot of all of the objects in existence

Show threadAndrew ZonenbergMar 27
@kbm0 in this particular case there's another level of indirection because the enumeration is done by a base class of a templated type, and I want a single list containing all instances of the child type with virtual methods to find out what type any given child is.
Show threadKen MilmoreMar 27
@azonenberg As an aside on performance, if your collection is *really* huge you will probably get a slight edge doing type selection with an enumerated field rather than using polymorphism.
Show threadAndrew ZonenbergMar 27
@kbm0 I'm not trying to index by type, just display it in a table when debugging
Show threadJP SugarbroadMar 27
@azonenberg @kbm0 What about a tracing approach? Record alloc/dealloc events and crunch it afterwards?
Show threadAndrew Zonenberg
@taral @kbm0 no i want something I can use dynamically as i manipulate the software and see what changes as i do things
Mar 27 at 6:56pmWeb
Show threadJP SugarbroadMar 27
@azonenberg @kbm0 Welp, that's a global object registry, yeah.
Show threadAndrew ZonenbergMar 27
@taral @kbm0 i have some wip stuff will post screenshots in the evening