Function transform_map_values

include/fplus/maps.hpp:87–99

// transform_map_values((*2), {0: 2, 1: 3}) == {0: 4, 1: 6}
template <typename F, typename MapIn>
auto transform_map_values(F f, const MapIn& map)
{
    using MapInPair = typename MapIn::value_type;
    using Key = std::remove_const_t<typename MapInPair::first_type>;
    using InVal = std::remove_const_t<typename MapInPair::second_type>;
    using OutVal = std::decay_t<internal::invoke_result_t<F, InVal>>;
    using MapOut = typename internal::SameMapTypeNewTypes<MapIn, Key, OutVal>::type;

    return pairs_to_map<MapOut>(
        transform(
            bind_1st_of_2(transform_snd<Key, InVal, F>, f),
            map_to_pairs(map)));
}

// API search type: map_union_with : (((val, val) -> val), Map key val, Map key val) -> Map key val
// fwd bind count: 2