Function retrieve

libs/echarts/echarts.simple.js:745–751

* If value1 is not null, then return value1, otherwise judget rest of values. * Low performance. * @memberOf module:zrender/core/util * @return {*} Final value

(values)

 * @return {*} Final value
 */
function retrieve(values) {
    for (var i = 0, len = arguments.length; i < len; i++) {
        if (arguments[i] != null) {
            return arguments[i];
        }
    }
}

function retrieve2(value0, value1) {
    return value0 != null