var invoker = require('./invoker');


/**
 * Returns a string made by inserting the `separator` between each element and
 * concatenating all the elements into a single string.
 *
 * @func
 * @memberOf R
 * @since v0.1.0
 * @category List
 * @sig String -> [a] -> String
 * @param {Number|String} separator The string used to separate the elements.
 * @param {Array} xs The elements to join into a string.
 * @return {String} str The string made by concatenating `xs` with `separator`.
 * @see R.split
 * @example
 *
 *      var spacer = R.join(' ');
 *      spacer(['a', 2, 3.4]);   //=> 'a 2 3.4'
 *      R.join('|', [1, 2, 3]);    //=> '1|2|3'
 */
module.exports = invoker(1, 'join');