Funs

Funs is a functional programming library for C++. It is currently only a proof of concept, but is under active development.

Examples

std::vector<int> v1{1, 2, 3};

auto v2 = on(v1)
    .map([](int x) { return x * x; })
    .flatMap([](int x) {
        auto s = std::to_string(x) + "!";
        return std::vector<std::string>{s, s};
    })
    .val();

// v2 == std::vector<std::string>{"1!", "1!", "4!", "4!", "9!", "9!"}

Typeclasses

• Functor (map)
• Apply (ap)
• Applicative (pure)
• Monad (flatMap flatten)
• Foldable (foldLeft foldRight)
• Traverse (traverse)

Default Implementations

• funs::Id
• std::list
• std::vector
• std::unique_ptr
• std::shared_ptr

Related Projects

Funs is inspired by Cats.

License

This project is licensed under the MIT license. See the LICENSE file for details.