Re: [Boost-Users] Re: boost::function syntax

On Tuesday 26 August 2003 07:36 pm, shyamemani wrote:

I hate writing code in mailing list but here is a sample of what I want to do. I have a tree data strucutre class which fires event and each event has some different parameters that are passed to it. What I want to illustrate is that by calling one register function I get access to three events. In boost.signal this would require that the client call the connect for each event. Is this a good application for this library?

Perhaps not. When you have multiple events going to a single listener from a single source, signal/slot mechanisms aren't as useful as the interface/listener paradigm you are already using. Signals might be appropriate if you had a single event that could be any of those three: enum NodeEvent { node_added, node_changed, node_deleted }; boost::signal onNodeEvent; This may have some advantages over the iterface/listener approach you're using (for instance, the automatic disconnect when trackable objects are destructed or the ability to use Bind/Lambda), but it's very likely that Signals is not the right choice for this interface. Doug