45 lines
1.5 KiB
JavaScript
45 lines
1.5 KiB
JavaScript
import _curry2 from "./internal/_curry2.js";
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import _isFunction from "./internal/_isFunction.js";
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import and from "./and.js";
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import lift from "./lift.js";
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/**
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* A function which calls the two provided functions and returns the `&&`
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* of the results.
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* It returns the result of the first function if it is false-y and the result
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* of the second function otherwise. Note that this is short-circuited,
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* meaning that the second function will not be invoked if the first returns a
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* false-y value.
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*
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* In addition to functions, `R.both` also accepts any fantasy-land compatible
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* applicative functor.
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*
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* @func
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* @memberOf R
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* @since v0.12.0
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* @category Logic
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* @sig (*... -> Boolean) -> (*... -> Boolean) -> (*... -> Boolean)
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* @param {Function} f A predicate
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* @param {Function} g Another predicate
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* @return {Function} a function that applies its arguments to `f` and `g` and `&&`s their outputs together.
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* @see R.either, R.allPass, R.and
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* @example
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*
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* const gt10 = R.gt(R.__, 10)
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* const lt20 = R.lt(R.__, 20)
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* const f = R.both(gt10, lt20);
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* f(15); //=> true
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* f(30); //=> false
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*
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* R.both(Maybe.Just(false), Maybe.Just(55)); // => Maybe.Just(false)
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* R.both([false, false, 'a'], [11]); //=> [false, false, 11]
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*/
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var both =
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/*#__PURE__*/
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_curry2(function both(f, g) {
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return _isFunction(f) ? function _both() {
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return f.apply(this, arguments) && g.apply(this, arguments);
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} : lift(and)(f, g);
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});
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export default both; |