Third question: I say in principle because I am stuck here. For example how can I implement a named parameter bind? It seems to me that I am close to achieving this but I don't know exactly how. What I want is some kind of "bind
(3.0)" which is a function object that effectively evaluates to H( pvalue, 3.0) or to H(make_map<p>(pvariable), 3.0) when calling bind (3.0)(pvalue) or bind (3.0)(make_map<p>(pvalue)). Note that the most general case is something that defines partial parameters by a map //if H had four parameters: auto b = my::bind >( make_map (3.0, 4.0) ) ; // or my::make_bind<H>( make_map (3.0, 4.0) ) // and then use it as b(make_map (5.0,6.0)); I do not understand that. There is a bind example in libs/fusion/example/cookbook/do_the_bind.cpp . Proto might be more helpful here, though.
do_the_bind seem to be what I am looking for except that the bind is done by placeholder number instead of key (named parameter) in any case I couldn't go far because the do_the_bind.cpp doesn't compile for me (attached is the error message).