Benchmark: asdfasdf - MeasureThat.net

Script Preparation code:

var a = [1,1,1,1,23,,5,6,3,2132,,66,456,,546];
var s = []

Tests:

spread
s.push(...a);
p-push
Array.prototype.push.apply(s, a);
for of
for (const item of a) { s.push(a); }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
spread
p-push
for of

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its options.

**Benchmark Definition**

The benchmark is defined by the JSON object, which contains the following information:

* `Name`: A unique name for the benchmark (in this case, "asdfasdf").
* `Description`: A brief description of the benchmark (in this case, "asdf").
* `Script Preparation Code` and `Html Preparation Code`: These are used to prepare the environment before running the benchmark. In this case, the script preparation code creates an array `a` with some predefined values and initializes an empty array `s`.

The benchmark itself is defined by an array of objects, each containing a single line of JavaScript code:

* `"s.push(...a);"`
* `"Array.prototype.push.apply(s, a);"`
* `"for (const item of a) {\r\n s.push(a);\r\n}"`

These lines of code perform the following operations on the array `a` and push the results into the array `s`.

**Options Compared**

The three options compared in this benchmark are:

1. **Spread operator (`...`)**: This is a syntax introduced in ECMAScript 2015 (ES6) that allows for concise array creation.
2. **`Array.prototype.push.apply()` method**: This is an older way of pushing elements onto an array, using the `apply()` method to pass multiple arguments to the `push()` method.
3. **`for...of` loop with array iteration**: This is another syntax introduced in ES6 that allows for iterating over arrays without explicitly specifying indices.

**Pros and Cons**

Here's a brief summary of the pros and cons of each approach:

1. **Spread operator (`...`)**:
	* Pros: Concise, readable, and efficient.
	* Cons: May not be supported in older browsers or environments.
2. **`Array.prototype.push.apply()` method**:
	* Pros: Wide browser support, works with any array type.
	* Cons: Less concise than the spread operator, may require more effort to read and write.
3. **`for...of` loop with array iteration**:
	* Pros: Concise, readable, and efficient for some use cases (e.g., iterating over arrays).
	* Cons: May not be as familiar or intuitive to all developers.

**Libraries**

None of the benchmark options rely on external libraries.

**Special JS Features/Syntax**

The benchmark uses ES6 syntax and features:

* Spread operator (`...`)
* `for...of` loop
* Arrow functions ( implicit, e.g., `s.push(a)`)

If you're not familiar with these features, don't worry! They are introduced in ES6 and are widely supported by modern browsers.

**Alternatives**

Other alternatives for array push operations include:

1. **Using `Array.prototype.push()` method directly**: `s.push(...a)`
2. **Using a custom function to iterate over the array**: `function iterate(a, s) { for (const item of a) s.push(item); }`
3. **Using a library like Lodash**, which provides an implementation of `push.apply()` and other utility functions.

Keep in mind that these alternatives may have different performance characteristics or require additional setup.

I hope this explanation helps you understand the benchmark and its options!

Related benchmarks:

asdfasdf (version: 0)

asdf

Comparing performance of: spread vs p-push vs for of

Created: 8 years ago by: Guest

Jump to the latest result

spread

p-push

for of

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):