18 Apr
2007
18 Apr
'07
6:06 p.m.
Larry Evans wrote:
On 04/17/2007 09:24 PM, Maurizio Vitale wrote:
(and maybe 0 arguments as
well).
<snip>
I've just encounted a need for something like this. For example, if you have a list of types for which you want to apply the or_ to, however, that list must by calculated, then the only way to apply or to it is with a fold operation. Since mpl::fold takes an argument represening the initial state, this would naturally be proto::or_<> in case you want to proto::or_ together a list of types. <snip>
Interesting. In order for this to work, proto::or_ would need to be an extensible mpl sequence, right? It currently is not. -- Eric Niebler Boost Consulting www.boost-consulting.com