/**
* Returns the sum of a and b
* @param {number} a
* @param {number} b
* @returns {number}
*/
function sum(a, b) {
return a + b;
}
/**
* Returns the sum of a and b
* @param {number} a
* @param {number} b
* @param {boolean} retArr If set to true, the function will return an array
* @returns {(number|Array)} Sum of a and b or an array that contains a, b and the sum of a and b.
*/
function summ(a, b, retArr) {
if (retArr) {
return [a, b, a + b];
}
return a + b;
}
/**
* Returns the sum of a and b
* @param {number} a
* @param {number} b
* @returns {Promise} Promise object represents the sum of a and b
*/
function sumAsync(a, b) {
return new Promise(function(resolve, reject) {
resolve(a + b);
});
}