Question

std::vector<int> v1;
std::function<void(const int&)> funct = 
static_cast<std::function<void(const int&)>>(std::bind(
                                            &std::vector<int>::push_back,
                                            &v1,
                                            std::placeholders::_1));

This gives me no matching function for call to bind.

I am able to do this though:

threadPool.push_back(std::thread(runThread<lazyFunct>,
                     std::bind(&LazySkipList<int>::add,
                     &lsl, std::placeholders::_1), 0, 1000000, 1000000));

I am using Xcode 4.4 with llvm C++11 support.

Answer 1

The problem is std::vector::push_back() is overloaded with the two possible type signatures:

void push_back(const T& value);
void push_back(T&& value);

As such, the template parameter to std::bind() cannot be inferred. However, you can declare the template parameter explicitly:

std::bind<void(std::vector<int>::*)(const int&)>(&std::vector<int>::push_back, &v1, std::placeholders::_1);

This resolves correctly.

Of course, at this point it might be simpler just to use a lambda:

auto func = [&](int i){ v1.push_back(i); };