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nth.js
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nth.js
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var _curry2 = require('./internal/_curry2');
var _isString = require('./internal/_isString');
/**
* Returns the nth element of the given list or string. If n is negative the
* element at index length + n is returned.
*
* @func
* @memberOf R
* @since v0.1.0
* @category List
* @sig Number -> [a] -> a | Undefined
* @sig Number -> String -> String
* @param {Number} offset
* @param {*} list
* @return {*}
* @example
*
* var list = ['foo', 'bar', 'baz', 'quux'];
* R.nth(1, list); //=> 'bar'
* R.nth(-1, list); //=> 'quux'
* R.nth(-99, list); //=> undefined
*
* R.nth(2, 'abc'); //=> 'c'
* R.nth(3, 'abc'); //=> ''
*/
module.exports = _curry2(function nth(offset, list) {
var idx = offset < 0 ? list.length + offset : offset;
return _isString(list) ? list.charAt(idx) : list[idx];
});