8ee50178f3
Correct: `Array.from()` (it’s a static method) Incorrect: `Array.join()` (doesn’t exist; it’s a prototype method) This patch uses the common `#` syntax to denote `.prototype.`.
762 B
762 B
uncurry
Uncurries a function up to depth n.
Return a variadic function.
Use Array.prototype.reduce() on the provided arguments to call each subsequent curry level of the function.
If the length of the provided arguments is less than n throw an error.
Otherwise, call fn with the proper amount of arguments, using Array.prototype.slice(0, n).
Omit the second argument, n, to uncurry up to depth 1.
const uncurry = (fn, n = 1) => (...args) => {
const next = acc => args => args.reduce((x, y) => x(y), acc);
if (n > args.length) throw new RangeError('Arguments too few!');
return next(fn)(args.slice(0, n));
};
const add = x => y => z => x + y + z;
const uncurriedAdd = uncurry(add, 3);
uncurriedAdd(1, 2, 3); // 6