Re: [Boost-users] [accumulators] help/advise required: Need a container to hold accumulator_set

Hello, ----- Original Message ----

From: Eric Niebler To: boost-users@lists.boost.org Sent: Sunday, 22 February, 2009 11:25:30 AM Subject: Re: [Boost-users] [accumulators] help/advise required: Need a container to hold accumulator_set

dhruva wrote:

...

will have to make it a member variable of a class. I will not know the type of calculations to requested at compile time. I therefore need a generic accumulator type as member and add the specific type at runtime.

It doesn't sound like Boost.Accumulators is a good fit for your problem. Accumulators uses static type information to resolve computational dependencies and order calculations. As you don't know what you will be computing until runtime, you can't provide Accumulators with the static type information it requires.

The approach I proposed by using droppable types and dropping those that are not required. is it expensive? Though it might look not so elegant, would that work? -dhruva Connect with friends all over the world. Get Yahoo! India Messenger at http://in.messenger.yahoo.com/?wm=n/