[d24f17c] | 1 | import _curry2 from "./internal/_curry2.js";
|
---|
| 2 | /**
|
---|
| 3 | * Wraps a function of any arity (including nullary) in a function that accepts
|
---|
| 4 | * exactly `n` parameters. Any extraneous parameters will not be passed to the
|
---|
| 5 | * supplied function.
|
---|
| 6 | *
|
---|
| 7 | * @func
|
---|
| 8 | * @memberOf R
|
---|
| 9 | * @since v0.1.0
|
---|
| 10 | * @category Function
|
---|
| 11 | * @sig Number -> (* -> a) -> (* -> a)
|
---|
| 12 | * @param {Number} n The desired arity of the new function.
|
---|
| 13 | * @param {Function} fn The function to wrap.
|
---|
| 14 | * @return {Function} A new function wrapping `fn`. The new function is guaranteed to be of
|
---|
| 15 | * arity `n`.
|
---|
| 16 | * @see R.binary, R.unary
|
---|
| 17 | * @example
|
---|
| 18 | *
|
---|
| 19 | * const takesTwoArgs = (a, b) => [a, b];
|
---|
| 20 | *
|
---|
| 21 | * takesTwoArgs.length; //=> 2
|
---|
| 22 | * takesTwoArgs(1, 2); //=> [1, 2]
|
---|
| 23 | *
|
---|
| 24 | * const takesOneArg = R.nAry(1, takesTwoArgs);
|
---|
| 25 | * takesOneArg.length; //=> 1
|
---|
| 26 | * // Only `n` arguments are passed to the wrapped function
|
---|
| 27 | * takesOneArg(1, 2); //=> [1, undefined]
|
---|
| 28 | * @symb R.nAry(0, f)(a, b) = f()
|
---|
| 29 | * @symb R.nAry(1, f)(a, b) = f(a)
|
---|
| 30 | * @symb R.nAry(2, f)(a, b) = f(a, b)
|
---|
| 31 | */
|
---|
| 32 |
|
---|
| 33 | var nAry =
|
---|
| 34 | /*#__PURE__*/
|
---|
| 35 | _curry2(function nAry(n, fn) {
|
---|
| 36 | switch (n) {
|
---|
| 37 | case 0:
|
---|
| 38 | return function () {
|
---|
| 39 | return fn.call(this);
|
---|
| 40 | };
|
---|
| 41 |
|
---|
| 42 | case 1:
|
---|
| 43 | return function (a0) {
|
---|
| 44 | return fn.call(this, a0);
|
---|
| 45 | };
|
---|
| 46 |
|
---|
| 47 | case 2:
|
---|
| 48 | return function (a0, a1) {
|
---|
| 49 | return fn.call(this, a0, a1);
|
---|
| 50 | };
|
---|
| 51 |
|
---|
| 52 | case 3:
|
---|
| 53 | return function (a0, a1, a2) {
|
---|
| 54 | return fn.call(this, a0, a1, a2);
|
---|
| 55 | };
|
---|
| 56 |
|
---|
| 57 | case 4:
|
---|
| 58 | return function (a0, a1, a2, a3) {
|
---|
| 59 | return fn.call(this, a0, a1, a2, a3);
|
---|
| 60 | };
|
---|
| 61 |
|
---|
| 62 | case 5:
|
---|
| 63 | return function (a0, a1, a2, a3, a4) {
|
---|
| 64 | return fn.call(this, a0, a1, a2, a3, a4);
|
---|
| 65 | };
|
---|
| 66 |
|
---|
| 67 | case 6:
|
---|
| 68 | return function (a0, a1, a2, a3, a4, a5) {
|
---|
| 69 | return fn.call(this, a0, a1, a2, a3, a4, a5);
|
---|
| 70 | };
|
---|
| 71 |
|
---|
| 72 | case 7:
|
---|
| 73 | return function (a0, a1, a2, a3, a4, a5, a6) {
|
---|
| 74 | return fn.call(this, a0, a1, a2, a3, a4, a5, a6);
|
---|
| 75 | };
|
---|
| 76 |
|
---|
| 77 | case 8:
|
---|
| 78 | return function (a0, a1, a2, a3, a4, a5, a6, a7) {
|
---|
| 79 | return fn.call(this, a0, a1, a2, a3, a4, a5, a6, a7);
|
---|
| 80 | };
|
---|
| 81 |
|
---|
| 82 | case 9:
|
---|
| 83 | return function (a0, a1, a2, a3, a4, a5, a6, a7, a8) {
|
---|
| 84 | return fn.call(this, a0, a1, a2, a3, a4, a5, a6, a7, a8);
|
---|
| 85 | };
|
---|
| 86 |
|
---|
| 87 | case 10:
|
---|
| 88 | return function (a0, a1, a2, a3, a4, a5, a6, a7, a8, a9) {
|
---|
| 89 | return fn.call(this, a0, a1, a2, a3, a4, a5, a6, a7, a8, a9);
|
---|
| 90 | };
|
---|
| 91 |
|
---|
| 92 | default:
|
---|
| 93 | throw new Error('First argument to nAry must be a non-negative integer no greater than ten');
|
---|
| 94 | }
|
---|
| 95 | });
|
---|
| 96 |
|
---|
| 97 | export default nAry; |
---|