Resolving overloaded functions as described here: http://florianjw.de/en/passing_overloaded_functions.html

resolve.hpp

/**
 * Resolves overloaded functions when passing them to
 * function-templates.
 *
 * Example:
 * std::transform(vec1.begin(), vec1.end(), vec2.begin(), std::back_inserter(vec3),
 *                std::max); // ERROR: cannot infer template-argument
 *
 * std::transform(vec1.begin(), vec1.end(), vec2.begin(), std::back_inserter(vec3),
 *                UTIL_RESOLVE(std::max)); // Works.
 *
 * Requires: C++14, will hopefully become unneeded in C++17
 * Description: http://florianjw.de/en/passing_overloaded_functions.html
 * Author: Florian Weber (florianjw.de)
 * License: Public Domain or similar if not legally possible
 */

#define UTIL_RESOLVE(...) \
	[](auto&&...args)->decltype(auto){return __VA_ARGS__(std::forward<decltype(args)>(args)...);}