Benchmark: Compare the new ES6 spread operator with the traditional concat() method

HTML Preparation code:

<script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.25.0/ramda.js"></script>

Script Preparation code:

var params = [ "hello", true, 7 ];

Tests:

Array.prototype.concat
var result = [ 1, 2 ].concat(params);
spread operator
var result = [ 1, 2, ...params ];
Ramda assoc
const result = R.assoc([1, 2], params);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array.prototype.concat
spread operator
Ramda assoc

Fastest: N/A

Slowest: N/A

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Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):

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**What is being tested?**

The benchmark tests the performance of three different approaches to concatenate an array with another value.

**Options compared:**

1. **Array.prototype.concat**: This approach uses the traditional `concat()` method to merge two arrays.
2. **Spread operator (`...`)**: This approach uses the new ES6 spread operator to concatenate an array with another value.
3. **Ramda assoc**: This approach uses a utility function from the Ramda library (a functional programming library for JavaScript) to create a new array by merging the input values.

**Pros and Cons of each approach:**

1. **Array.prototype.concat**:
	* Pros: widely supported, easy to use.
	* Cons: can be slow for large arrays, modifies the original array.
2. **Spread operator (`...`)**:
	* Pros: concise syntax, faster than `concat()` for small arrays.
	* Cons: not supported in older browsers (e.g., IE), requires a modern JavaScript engine.
3. **Ramda assoc**:
	* Pros: provides an immutable solution, can be faster than `concat()` and the spread operator.
	* Cons: requires the Ramda library, may have additional overhead.

**Other considerations:**

1. **Library usage**: The test case using Ramda assoc imports the entire Ramda library, which might not be necessary for this specific use case.
2. **JavaScript feature or syntax**: The test case uses the spread operator (`...`), which is a new ES6 feature. This approach is recommended over `concat()` for small arrays.

**Other alternatives:**

1. **reduce() method**: Another approach to merge two arrays is using the `reduce()` method, which can be more efficient than `concat()` or the spread operator.
2. **slice() method**: For larger arrays, using the `slice()` method with a loop might be faster than the spread operator or Ramda assoc.

**Library used:**

The test case using Ramda assoc imports the entire [Ramda library](https://ramdajs.com/), which is a functional programming library for JavaScript. Ramda provides various utility functions, such as `assoc`, to create immutable data structures and perform efficient computations.

I hope this explanation helps you understand what's being tested and the pros and cons of each approach!

Related benchmarks:

Compare the new ES6 spread operator with the traditional concat() method (version: 0)

Comparing performance of: Array.prototype.concat vs spread operator vs Ramda assoc

Created: 8 years ago by: Guest

Jump to the latest result

Array.prototype.concat

spread operator

Ramda assoc

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):