Benchmark: ad1235 - MeasureThat.net

Tests:

123
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
321
var params = [ "hello", true, 7 ]; var other = [ 1, 2, ...params ];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
123
321

Fastest: N/A

Slowest: N/A

Latest run results:

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

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Let's break down the provided benchmark definition and test cases.

**Benchmark Definition JSON**

The provided `Benchmark Definition` JSON is quite minimal, which might be intentional to focus on the core aspects of the benchmarking process. It defines:

* A script preparation code: None (i.e., no setup or initialization code).
* An HTML preparation code: None (no specific HTML setup is required).
* The test case itself: Two JavaScript functions that create arrays and concatenate them.

The only notable aspect of this JSON is the absence of a detailed description for the benchmark, which might be assumed to be obvious based on the provided script.

**Individual Test Cases**

There are two test cases:

1. **Test Case 1**
```javascript
var params = [ "hello", true, 7 ];
var other = [ 1, 2 ].concat(params);
```
This test case creates an array `params` with three elements: a string `"hello"`, a boolean `true`, and an integer `7`. It then concatenates this array with another array `[ 1, 2 ]` using the spread operator (`...`) to create a new array `other`.

2. **Test Case 2**
```javascript
var params = [ "hello", true, 7 ];
var other = [ 1, 2, ...params ];
```
This test case is identical to Test Case 1, but uses the spread operator (`...`) instead of the `concat()` method to concatenate the two arrays.

**Library and Special JS Features**

Neither test case explicitly uses any libraries or features beyond standard JavaScript syntax. However, it's worth noting that the use of the spread operator (`...`) is a relatively modern feature (introduced in ECMAScript 2015) and might not be supported by older browsers or environments.

**Options Compared**

In this benchmark, two approaches are compared:

1. **Concatenation using `concat()`**: This method creates a new array by concatenating the elements of both arrays.
2. **Spread operator (`...`)**: This method also creates a new array by concatenating the elements of both arrays, but is more concise and efficient.

**Pros and Cons**

Here are some pros and cons for each approach:

* **Concatenation using `concat()`**:
	+ Pros: Widely supported in older browsers and environments.
	+ Cons: Can create a temporary intermediate array, which might be inefficient for large datasets.
* **Spread operator (`...`)**:
	+ Pros: More concise and efficient than `concat()`, as it avoids creating an intermediate array.
	+ Cons: Requires support for the spread operator in older browsers or environments.

**Other Considerations**

When choosing between these two approaches, consider the trade-off between code readability and performance. If you're working with large datasets, the spread operator might be a better choice due to its efficiency. However, if you're targeting very old browsers or environments that don't support the spread operator, `concat()` might be a more reliable option.

**Alternatives**

Other alternatives for concatenating arrays in JavaScript include:

* Using `Array.prototype.push()`: Instead of creating a new array, you can push elements onto an existing array using `push()`.
* Using `Array.prototype.splice()`: You can also use `splice()` to add multiple elements to the end of an array.

However, these alternatives might not offer the same level of conciseness and efficiency as the spread operator.

Related benchmarks:

ad1235 (version: 0)

Comparing performance of: 123 vs 321

Created: 7 years ago by: Guest

Jump to the latest result

123

321

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):