add.js
 1  var createMathOperation = require('./_createMathOperation');
 2  
 3  /**
 4   * Adds two numbers.
 5   *
 6   * @static
 7   * @memberOf _
 8   * @since 3.4.0
 9   * @category Math
10   * @param {number} augend The first number in an addition.
11   * @param {number} addend The second number in an addition.
12   * @returns {number} Returns the total.
13   * @example
14   *
15   * _.add(6, 4);
16   * // => 10
17   */
18  var add = createMathOperation(function(augend, addend) {
19    return augend + addend;
20  }, 0);
21  
22  module.exports = add;