Re: [Boost-users] Expand tuple values as callable arguments

On Tue, Jun 9, 2009 at 10:32 AM, Joel de Guzman wrote:

Dominique Devienne wrote:

...

Given a boost::tuple abc; is there a boost facility that allows to "expand" abc into its a, b, c values to pass to a callable

Fusion Functional (see http://tinyurl.com/oodztm) does that, but it seems you know already. Boost.Tuple is a valid fusion sequence, so you can use it for your fusion fused and unfused forms.

Thanks. I read too fast that section of the Fusion doc, and missed what I was looking for. Yes, I was aware that Fusion has Callables, but trying to figure out what from Bind, FunctionTypes, Function, BLL, or Fusion applied to what I'm trying to achieve, I'm a bit confused by the choices. I'm finding it non trivial to go from reading the doc of Fusion or BLL and be able to conceptualize how and when to use them, or not use them. I can't say I've read all the doc yet, but I for one would appreciate a bit more hand holding and examples to better grasp some concepts. Easier said that done, I know, and I sure am thankful for the high quality code shared with the C++ community. The failure is mine to understand the boost libs faster / better ;-) I'll see what I can figure out and will try to provide more concrete sample code if I get stuck. Thanks, --DD PS: Any Effective Meta-Programming or Fusion book or resource out there or in the works? The Template Meta-Programming book focused more on implementing MPL-like containers and algos that appropriately and effectively using libraries like MPL or Fusion for someone like me.