Benchmark: Direct object array access vs _.get

HTML Preparation code:


<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>

Script Preparation code:

dataset = {
    data: {
        records: [0, 1, 2, 3, 4]
    }
}

Tests:

vanilla
dataset.data.records[0]
lodash get
_.get(dataset, 'data.records[0]')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
vanilla
lodash get

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser/OS: Chrome 121 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
vanilla	14305285.0 Ops/sec
lodash get	4770030.5 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Definition**

The benchmark is testing two different ways to access an array element in JavaScript:

1. **Direct object array access**: `dataset.data.records[0]`
2. **_.get (Lodash)**: `_.get(dataset, 'data.records[0]')`

**Options Compared**

The benchmark is comparing the performance of these two approaches on a desktop machine running Chrome 121.

**Pros and Cons**

1. **Direct object array access**:
	* Pros:
		+ Faster, as it directly accesses the memory location of the element.
		+ More efficient, as it avoids additional function calls.
	* Cons:
		+ May not be as readable or maintainable, especially for complex expressions.
2. **_.get (Lodash)**:
	* Pros:
		+ More readable and maintainable, as it uses a standardized and well-documented API.
		+ Can handle more complex cases, such as nested arrays or objects.
	* Cons:
		+ Slower, due to the additional function call.

**Library: Lodash**

Lodash is a popular JavaScript library that provides a set of utility functions for common tasks, such as array and object manipulation. In this case, `_.get` is used to access nested properties in an object.

**Special JS Feature or Syntax**

There are no special features or syntaxes being tested in this benchmark. It's purely focusing on the performance comparison between two different ways of accessing array elements.

**Other Alternatives**

If you're interested in exploring other alternatives, here are a few:

1. **Using `in` operator**: Instead of using bracket notation (`dataset.data.records[0]`) or Lodash's `_.get`, you could use the `in` operator to access properties: `in dataset.data && records[0]`.
2. **Using `forEach` and indexing**: You could also use the `forEach` method on an array and then index into the result using bracket notation.
3. **Using a custom function or class**: Depending on your specific use case, you might want to consider creating a custom function or class that encapsulates the logic for accessing array elements.

Keep in mind that these alternatives may have their own pros and cons, and the benchmark results may vary depending on the specific implementation and use cases.

Related benchmarks:

Direct object array access vs _.get (version: 0)

Comparing performance of: vanilla vs lodash get

Created: 2 years ago by: Guest

Jump to the latest result

vanilla

lodash get

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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