ramda-adjunct/lib/isEven.js

Ramda Adjunct is the most popular and most comprehensive set of utilities for use with Ramda, providing a variety of useful, well tested functions with excellent documentation.

"use strict";

exports.__esModule = true;
exports["default"] = void 0;

var _ramda = require("ramda");

var _isInteger = _interopRequireDefault(require("./isInteger"));

var _isOdd = _interopRequireDefault(require("./isOdd"));

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { "default": obj }; }

/**
 * Checks if value is even integer number.
 * An even number is an integer which is "evenly divisible" by two.
 * Zero is an even number because zero divided by two equals zero,
 * which despite not being a natural number, is an integer.
 * Even numbers are either positive or negative.
 *
 * @func isEven
 * @memberOf RA
 * @since {@link https://char0n.github.io/ramda-adjunct/1.18.0|v1.18.0}
 * @category Type
 * @sig * -> Boolean
 * @param {*} val The value to test
 * @return {boolean}
 * @see {@link RA.isOdd|isOdd}
 * @example
 *
 * RA.isEven(0); // => true
 * RA.isEven(1); // => false
 * RA.isEven(-Infinity); // => false
 * RA.isEven(4); // => true
 * RA.isEven(3); // => false
 */
var isEven = (0, _ramda.curryN)(1, (0, _ramda.both)(_isInteger["default"], (0, _ramda.complement)(_isOdd["default"])));
var _default = isEven;
exports["default"] = _default;