Because this is a learning group and not a teaching group--and you didThis is not only std::function feature. In C++ we can call member-function by combining potinter to object and pointer to function:not report on your fruitless tries: go on. -manfred
http://liveworkspace.org/code/1fe3107cf3a311aa95cb9fc62b9117a7 I have no idea how to do somethink like that in D.
