관리-도구

편집 파일: flatten.js

var baseFlatten = require('../internal/baseFlatten'), isIterateeCall = require('../internal/isIterateeCall'); /** * Flattens a nested array. If `isDeep` is `true` the array is recursively * flattened, otherwise it's only flattened a single level. * * @static * @memberOf _ * @category Array * @param {Array} array The array to flatten. * @param {boolean} [isDeep] Specify a deep flatten. * @param- {Object} [guard] Enables use as a callback for functions like `_.map`. * @returns {Array} Returns the new flattened array. * @example * * _.flatten([1, [2, 3, [4]]]); * // => [1, 2, 3, [4]] * * // using `isDeep` * _.flatten([1, [2, 3, [4]]], true); * // => [1, 2, 3, 4] */ function flatten(array, isDeep, guard) { var length = array ? array.length : 0; if (guard && isIterateeCall(array, isDeep, guard)) { isDeep = false; } return length ? baseFlatten(array, isDeep) : []; } module.exports = flatten;