12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970 |
- import _curry1 from "./internal/_curry1.js";
- import curryN from "./curryN.js";
- /**
- * Returns a curried equivalent of the provided function. The curried function
- * has two unusual capabilities. First, its arguments needn't be provided one
- * at a time. If `f` is a ternary function and `g` is `R.curry(f)`, the
- * following are equivalent:
- *
- * - `g(1)(2)(3)`
- * - `g(1)(2, 3)`
- * - `g(1, 2)(3)`
- * - `g(1, 2, 3)`
- *
- * Secondly, the special placeholder value [`R.__`](#__) may be used to specify
- * "gaps", allowing partial application of any combination of arguments,
- * regardless of their positions. If `g` is as above and `_` is [`R.__`](#__),
- * the following are equivalent:
- *
- * - `g(1, 2, 3)`
- * - `g(_, 2, 3)(1)`
- * - `g(_, _, 3)(1)(2)`
- * - `g(_, _, 3)(1, 2)`
- * - `g(_, 2)(1)(3)`
- * - `g(_, 2)(1, 3)`
- * - `g(_, 2)(_, 3)(1)`
- *
- * Please note that default parameters don't count towards a [function arity](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Function/length)
- * and therefore `curry` won't work well with those:
- *
- * ```
- * const h = R.curry((a, b, c = 2) => a + b + c);
- *
- * h(40);
- * //=> function (waits for `b`)
- *
- * h(39)(1);
- * //=> 42
- *
- * h(1)(2, 3);
- * //=> 6
- *
- * h(1)(2)(7);
- * //=> Error! (`3` is not a function!)
- * ```
- *
- * @func
- * @memberOf R
- * @since v0.1.0
- * @category Function
- * @sig (* -> a) -> (* -> a)
- * @param {Function} fn The function to curry.
- * @return {Function} A new, curried function.
- * @see R.curryN, R.partial
- * @example
- *
- * const addFourNumbers = (a, b, c, d) => a + b + c + d;
- *
- * const curriedAddFourNumbers = R.curry(addFourNumbers);
- * const f = curriedAddFourNumbers(1, 2);
- * const g = f(3);
- * g(4); //=> 10
- */
- var curry =
- /*#__PURE__*/
- _curry1(function curry(fn) {
- return curryN(fn.length, fn);
- });
- export default curry;
|