Benchmark: dsbvcndfgsa - MeasureThat.net

Tests:

Array.prototype.concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread operator
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
Array.prototype.concat
spread operator

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'd be happy to help you understand the benchmark and its results.

**What is being tested?**

The provided JSON represents two JavaScript microbenchmarks: `Array.prototype.concat` and `spread operator`. The benchmarks test how efficient different approaches are for performing array concatenation or spreading an array in a specific context.

**Options compared**

For both benchmarks, the options being compared are:

1. **Using `concat()` method**: This is the traditional way of concatenating arrays using the `concat()` method.
2. **Using spread operator (`...`)**: The spread operator was introduced in ECMAScript 2015 (ES6) as a shorthand for creating new arrays from an existing array.

**Pros and Cons**

1. **`concat()` method**:
	* Pros:
		+ Wide support across browsers and platforms.
		+ Easy to implement and understand.
	* Cons:
		+ Can be slower compared to the spread operator due to the overhead of creating a new array.
		+ May lead to performance issues in certain scenarios, especially when dealing with large arrays.
2. **Spread operator (`...`)**:
	* Pros:
		+ Faster execution speed compared to `concat()` method due to its optimized implementation.
		+ More concise and readable syntax.
	* Cons:
		+ Limited support across older browsers (pre-ES6).
		+ May require additional setup or polyfills for compatibility.

**Library usage**

In the provided benchmark, there is no library usage. However, in general, libraries like Lodash or Ramda might be used to simplify array operations and potentially affect performance.

**Special JavaScript feature/syntax**

The spread operator (`...`) was introduced in ECMAScript 2015 (ES6) as a new syntax for creating new arrays from an existing array. It's supported in modern browsers and platforms, but may require additional setup or polyfills for compatibility with older versions.

**Other alternatives**

If the spread operator is not available, alternative approaches can be used:

1. **Array.prototype.push()**: This method appends elements to the end of an array.
2. **Array.prototype.slice()**: This method creates a shallow copy of an array.

These alternatives may have different performance characteristics compared to the spread operator and `concat()` method.

I hope this explanation helps you understand the benchmark and its results! Let me know if you have any further questions.

Related benchmarks:

dsbvcndfgsa (version: 0)

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

Created: 6 years ago by: Guest

Jump to the latest result

Array.prototype.concat

spread operator

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):