Benchmark: Object keys vs Array map v2

Script Preparation code:

var obj = {}
var arr = []
for (var i = 0; i < 10000; i++) {
    let random = Math.floor(Math.random() * 10)
    obj[i] = {
        value: random
    };
    arr[i] = {
        value: random
    }
}

Tests:

Object keys
Object.keys(obj).map(key => console.log(obj[key].value))
Array map
arr.map(item => console.log(item.value))
Object keys (No console.log)
Object.keys(obj).map(key => obj[key].value)
Array map (No console.log)
arr.map(item => item.value)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object keys
Array map
Object keys (No console.log)
Array map (No console.log)

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/17.2.1 Safari/605.1.15

Browser/OS: Safari 17 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
Object keys	82.9 Ops/sec
Array map	95.7 Ops/sec
Object keys (No console.log)	573.9 Ops/sec
Array map (No console.log)	30770.8 Ops/sec

Autogenerated LLM Summary (model llama3.2:3b, generated 5 months ago):

LLMs can make mistakes. Check important info.

Let's break down what's being tested in this benchmark.

**Benchmark Definition**

The benchmark definition is a JSON object that specifies the test case to be executed. In this case, there are four different test cases:

1. `Object.keys(obj).map(key => console.log(obj[key].value))` (Test Name: "Object keys")
2. `arr.map(item => console.log(item.value))` (Test Name: "Array map")
3. `Object.keys(obj).map(key => obj[key].value)` (Test Name: "Object keys (No console.log)")
4. `arr.map(item => item.value)` (Test Name: "Array map (No console.log)")

**Options Being Compared**

The benchmark is comparing the performance of two approaches:

1. **Using `console.log` with object properties**: In this approach, the `map` function iterates over the object's keys and logs the corresponding property value using `console.log`.
2. **Without logging**: In this approach, the `map` function only accesses the property values without logging them.

**Pros and Cons of Each Approach**

1. **Using `console.log` with object properties**:
	* Pros: This approach is straightforward and easy to understand.
	* Cons: It introduces unnecessary overhead due to logging, which can slow down the performance of the benchmark.
2. **Without logging**:
	* Pros: This approach minimizes unnecessary overhead and focuses on the actual computation time.
	* Cons: The code becomes more concise, but it may be harder to understand for some readers.

**Library Used**

None (no external libraries are mentioned in the benchmark definition).

**Special JS Features or Syntax**

No special JavaScript features or syntax are used beyond standard language support. However, the use of arrow functions (`=>`) is a modern JavaScript feature that was introduced in ECMAScript 2015.

**Other Considerations**

The benchmark seems to be designed to compare the performance of these two approaches on a specific data structure (an object with 10,000 properties). The results are likely to provide insight into which approach is faster and more efficient for this particular use case.

**Alternatives**

If you wanted to modify or extend this benchmark, some possible alternatives could include:

1. **Using different data structures**: Experimenting with different types of data structures, such as arrays of objects or even a custom data structure.
2. **Adding additional computations**: Introducing more complex computations within the `map` function to better simulate real-world scenarios.
3. **Comparing other libraries or frameworks**: Evaluating the performance of different libraries or frameworks that provide similar functionality (e.g., comparing jQuery with vanilla JavaScript).
4. **Incorporating parallelism**: Measuring the performance benefits of using parallel processing or multi-threading to execute the `map` function.

Related benchmarks:

Object keys vs Array map v2 (version: 0)

Comparing performance of: Object keys vs Array map vs Object keys (No console.log) vs Array map (No console.log)

Created: 4 years ago by: Guest

Jump to the latest result

Object keys

Array map

Object keys (No console.log)

Array map (No console.log)

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 5 months ago):