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x/ramda/both.js

:ram: Practical functional Javascript
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import _curry2 from './internal/_curry2';import _isFunction from './internal/_isFunction';import and from './and';import lift from './lift';

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