58 lines
1.6 KiB
JavaScript
58 lines
1.6 KiB
JavaScript
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import _arity from "./internal/_arity.js";
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import _curry1 from "./internal/_curry1.js";
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import _curry2 from "./internal/_curry2.js";
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import _curryN from "./internal/_curryN.js";
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/**
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* Returns a curried equivalent of the provided function, with the specified
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* arity. The curried function has two unusual capabilities. First, its
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* arguments needn't be provided one at a time. If `g` is `R.curryN(3, f)`, the
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* following are equivalent:
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*
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* - `g(1)(2)(3)`
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* - `g(1)(2, 3)`
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* - `g(1, 2)(3)`
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* - `g(1, 2, 3)`
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*
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* Secondly, the special placeholder value [`R.__`](#__) may be used to specify
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* "gaps", allowing partial application of any combination of arguments,
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* regardless of their positions. If `g` is as above and `_` is [`R.__`](#__),
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* the following are equivalent:
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*
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* - `g(1, 2, 3)`
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* - `g(_, 2, 3)(1)`
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* - `g(_, _, 3)(1)(2)`
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* - `g(_, _, 3)(1, 2)`
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* - `g(_, 2)(1)(3)`
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* - `g(_, 2)(1, 3)`
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* - `g(_, 2)(_, 3)(1)`
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*
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* @func
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* @memberOf R
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* @since v0.5.0
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* @category Function
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* @sig Number -> (* -> a) -> (* -> a)
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* @param {Number} length The arity for the returned function.
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* @param {Function} fn The function to curry.
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* @return {Function} A new, curried function.
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* @see R.curry
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* @example
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*
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* const sumArgs = (...args) => R.sum(args);
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*
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* const curriedAddFourNumbers = R.curryN(4, sumArgs);
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* const f = curriedAddFourNumbers(1, 2);
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* const g = f(3);
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* g(4); //=> 10
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*/
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var curryN =
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/*#__PURE__*/
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_curry2(function curryN(length, fn) {
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if (length === 1) {
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return _curry1(fn);
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}
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return _arity(length, _curryN(length, [], fn));
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});
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export default curryN;
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