const add = a => b => a + b;
add(1)(2); // 3

const doubleThenAdd2 = pipe(multiply(2), add(2));
doubleThenAdd2(5); // 12

add(1, 2); // b => 1 + b;

const add = curry((a, b) => a + b);
add(1); // b => 1 + b;
add(1, 2); // 3
add(1)(2); // 3

const sort = (arr, algo = 'bubble') => // ... implementation

const api = ({ url, method = 'GET', body = {}, headers = {} }) => // ...
implementation

const sort = curry((algo, arr) => // ... implementation );
sort('bubble', [5, 214, 23, 6]); // [5, 6, 23, 213]
const sortBubble = sort('bubble');

const doubleThenAdd2 = x => x |> multiply(2) |> add(2);

const doubleThenAdd2 = x => x |> multiply(2, ^) |> add(2, ^);

const doubleThenAdd2 = x => x |> 2 * ^ |> 2 + ^;

// Without `curry`
1 |> add(1)(%);
// With `curry`
1 |> add(1, %);

// From the README, w/ Hack pipe
const updated = state |> #{
    ...^,
    counters[0].value: 2,
    counters[1].value: 1,
    metadata.lastUpdate: 1584383011300,
};

assert(updated.counters[0].value === 2);
assert(updated.counters[1].value === 1);
assert(updated.metadata.lastUpdate === 1584383011300);