lodash-cpp

originally forked from underscore.cpp, this has been updated for c++14, and includes more underscore functionality and a smattering of the more useful container functions from lodash.

c++14 has allowed for compatability with some of the quirkier stl containers (e.g. std::set) that weren't previously compatible.

Installation

lodash-cpp is a single-file, header only library.

Usage

std::vector<int> numbers;
for (int i = 0; i < 10; i++) {
  numbers.push_back(i);
}

// Display is a function that takes one argument of type int.
_::each(numbers, display);

using json = nlohmann::json;
Vector3 fromJSON(json& values) {
    auto v = _::values<std::vector<float>>(values);
    return Vector3(v.data());
}

#include <nowide/convert.hpp>
using namespace nowide;
using fspath = std::experimental::filesystem::path;

template<typename Container>
std::string pathCombine(Container container) {
	// see: https://developer.mozilla.org/en/docs/Web/JavaScript/Reference/Global_Objects/Array/reduce
	fspath path = _::reduce(Container, [](fspath _path, std::string segment) {
		return _path /= filepath(segment);
	}, fspath);
	return narrow(path.wstring());
}

// filter, then sort by predicate
std::vector<Player> players;

players = _::sort_by<decltype(players)>(
    _::filter<decltype(players)>(getPlayers(), [=](const Player& player) {
        return player.inVehicle();
    }), [](auto a, auto b) { return distanceTo(a.ped()) < distanceTo(b.ped()) });

The functions that have been implemented:

• all
• any
• chain
• collect
• compact
• contains
• detect
• difference
• each
• each_iter — version of each that passes an iterator
• each_with_distance — version of each that passes an index
• every
• filter
• find
• first
• flatten
• foldl
• foldr
• for_each
• group_by
• head
• includes
• indexOf
• initial
• inject
• intersection
• keys
• last
• last_index_of
• map
• map_iter — version of map that passes an iterator
• max
• min
• pluck
• pull
• pullAll
• reduce
• reduce_right
• reject
• remove — light-weight version of lodash remove that doesn't return an array
• removeAndReturn — full-weight vesion of lodash remove
• rest
• select
• shuffle
• size
• some
• sort_by
• tail
• to_array
• union_of
• uniq
• unique
• values
• without
• zip