* Checks if `value` is a valid array-like index. * * @private * @param {*} value The value to check. * @param {number} [length=MAX_SAFE_INTEGER] T

* Checks if `value` is a native function. * * @static * @memberOf _ * @category Lang * @param {*} value The value to check. * @returns {boolean}

* Appends the elements of `values` to `array`. * * @private * @param {Array} array The array to modify. * @param {Array} values The values to appe

* A specialized version of `_.reduce` for arrays without support for * iteratee shorthands. * * @private * @param {Array} array The array to itera

* The base implementation of `_.flatten` with added support for restricting * flattening and specifying the start index. * * @private * @param {Ar

* The base implementation of `_.uniq` without support for callback shorthands * and `this` binding. * * @private * @param {Array} array The array

* Creates a base function for methods like `_.forIn`. * * @private * @param {boolean} [fromRight] Specify iterating from right to left. * @returns

* Creates a `Set` cache object to optimize linear searches of large arrays. * * @private * @param {Array} [values] The values to cache. * @returns

* Creates a function like `_.camelCase`. * * @private * @param {Function} callback The function to combine each word. * @returns {Function} Return

* Creates a function for `_.forOwn` or `_.forOwnRight`. * * @private * @param {Function} objectFunc The function to iterate over an object. * @ret