Search code examples
c++qtboostboost-bindqtconcurrent

boost::bind along with qtconcurrent::map ...can't seem to make it work

Well I require your assistance because I can't seem to find a way to make

QtConcurrent::map work with my static function and my sequence of elements. Here is what I'm trying to do:

I want to run this function :

static void meta_engine_recursive(Node* node,OutputNode* output,Row *row);

On this set of elements: 

QList<Row*> tasks;

Here is what I do for the call to map , but the compiler doesn't like it...I can't find the correct syntax even after reading all the boost & Qt documentation !

QFuture<void> future= QtConcurrent::map(tasks,
                            boost::bind(&VideoEngine::meta_engine_recursive,
                            boost::ref(dynamic_cast<Node*>(input)),
                            boost::ref(output),_1)(row));

Ps: obviously this is C++

Also , please don't mind the boost::ref calls, I was just playing around with it. What I want to resolve is the call to map with the good parameters

Thanks for your help

Solution

  • nevermind I didn't do the correct parenthesing and the extra (row) at the end wasn't necessary. Here is the final call :

    QFuture<void> future= QtConcurrent::map(tasks,
                                            boost::bind(&VideoEngine::meta_engine_recursive,
                                                        dynamic_cast<Node*>(input),
                                                        output,_1));