Benchmark: Teste1 - MeasureThat.net

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/profile/gpon/line-profile[name = //config/gpon[id = \"1/1\"]/onu-auto-provisioning/service-port[id = \"1\"]/gem/gem-id/../../../line-profile]/gem/gem-id"

var getPredicatesIndexRange = function(xpath) {
    return [[{"start":54,"end":66},{"start":101,"end":111},{"start":33,"end":145}]];
}

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)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
reduce
old

Fastest: N/A

Slowest: N/A

Latest run results:

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This benchmark does not have any results yet. Be the first one to run it!

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its test cases.

**Benchmark Purpose:**

The benchmark measures the performance of two approaches to process XPath expressions in JavaScript. Specifically, it tests the `getPredicatesInfo` function (new approach) and the `getPredicatesInfoOld` function (old approach).

**Options Compared:**

1. **`getPredicatesInfo` (new approach)**:
	* This function uses the `_` object from Lodash, a utility library for functional programming.
	* It uses the `map` method to process the XPath expression and returns an array of objects with processed predicates.
	* The key aspect of this approach is its use of modern JavaScript features like arrow functions, template literals, and the `_` object.
2. **`getPredicatesInfoOld` (old approach)**:
	* This function uses a traditional loop-based approach to process the XPath expression.
	* It uses the `forEach` method to iterate over an array of predicate indexes and creates an array of objects with processed predicates.

**Pros and Cons:**

1. **`getPredicatesInfo` (new approach)**
	* Pros:
		+ More concise and readable code
		+ Uses modern JavaScript features, making it potentially more efficient
	* Cons:
		+ May be less intuitive for developers familiar with traditional loops
2. **`getPredicatesInfoOld` (old approach)**
	* Pros:
		+ More familiar to developers who prefer traditional loops
	* Cons:
		+ Code is longer and less readable

**Other Considerations:**

1. **Lodash library**: The benchmark uses Lodash, a popular utility library for functional programming. This adds some overhead to the code but provides a convenient way to perform common tasks.
2. **Modern JavaScript features**: The new approach uses modern JavaScript features like arrow functions and template literals, which can make the code more concise and readable.

**Special JS Features or Syntax:**

1. **Arrow functions**: Used in the `getPredicatesInfo` function to define short, concise functions.
2. **Template literals**: Used in the `getPredicatesInfo` function to create strings with placeholders for variables.

**Alternatives:**

If you were to reimplement these benchmarks without using Lodash or modern JavaScript features, you could consider the following alternatives:

1. Use a traditional loop-based approach like `getPredicatesInfoOld`.
2. Implement the `map` method from the standard library (e.g., `Array.prototype.map()`).
3. Use a different utility library that provides similar functionality to Lodash.
4. Write the code using only basic JavaScript syntax and features, without relying on modern language constructs.

Overall, the benchmark highlights the importance of choosing the right approach for your specific use case, considering factors like performance, readability, and maintainability.

Related benchmarks:

Teste1 (version: 0)

Comparing performance of: reduce vs old

Created: 7 years ago by: Guest

Jump to the latest result

reduce

old

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):