Run results for: Teste1-1

Run details:

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/70.0.3538.110 Safari/537.36

Browser: Chrome 70

Operating system: Windows

Device Platform: Desktop

Date tested: 5 years ago

Test name	Executions per second
reduce	80741.7 Ops/sec
old	82846.8 Ops/sec

HTML Preparation code:

<html>
  <head>
  	<script src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/3.10.1/lodash.min.js"></script>
  </head>
  <body>
  </body>
</html>

Script Preparation code:

var xpath = '/config/interface/gpon/onu[name = //multicast/profile/gpon[id = "5"]/onu[name = "onuName"]/brigde[id = //multicast/profile/gpon[id = "5"]/onu[name = "onuName"]/../../brigde]/onu]/gem/gem-id/status/interface/gpon/onu[name = //multicast/profile/gpon[id = "5"]/onu[name = "onuName"]/gem[id = //multicast/profile/gpon[id = "5"]/onu[name = "onuName"]/../../gem]/onu]/router/gem-id'

var getPredicatesIndexRange = function(xpath) {
    return [[{"start":58,"end":68},{"start":72,"end":90},{"start":127,"end":137},{"start":141,"end":159},{"start":97,"end":173},{"start":26,"end":178}],[{"start":247,"end":257},{"start":261,"end":279},{"start":313,"end":323},{"start":327,"end":345},{"start":283,"end":356},{"start":215,"end":361}]];
}

var getPredicatesInfoOld = function(xpath) {
    var predicates = [];
    var predicatesIndexRange = getPredicatesIndexRange(xpath);
    var index = 0;

    if (predicatesIndexRange !== 0) {
        _.each(predicatesIndexRange, function(predicateIndexes) {
            var predicateInfo = [];
            _.each(predicateIndexes, function(range) {
                var predicate = xpath.substring(range.start, range.end);
                var processedPredicate = predicate;

                _.each(predicateInfo, function(previousPredicate) {
                    processedPredicate = processedPredicate.replace(previousPredicate.predicate, previousPredicate.key);
                });

                predicateInfo.push({
                    key: "[predicate" + index + "]",
                    predicate: predicate,
                    processedPredicate: processedPredicate
                });
                index++;
            });

            predicates.push(predicateInfo);
        });
    }

    return predicates;
};

var getPredicatesInfo = function(xpath) {
    var predicatesIndexRange = getPredicatesIndexRange(xpath);
    
    return _.map(predicatesIndexRange, function(predicateIndexes) {
        var predicatesInfo = _.reduce(predicateIndexes, function(predicates, range, index) {
            var predicate = xpath.substring(range.start, range.end);
            var processedPredicate = predicate;

            _.each(predicates, function(previousPredicate) {
                processedPredicate = processedPredicate.replace(previousPredicate.predicate, previousPredicate.key);
            });

            predicates.push({
                key: "[predicate" + index + "]",
                predicate: predicate,
                processedPredicate: processedPredicate
            });

            return predicates;

        }, []);

        return predicatesInfo;
    });
};

Tests:

reduce
getPredicatesInfo(xpath)
old
getPredicatesInfoOld(xpath)

reduce

old