Benchmark: Random test - MeasureThat.net

Tests:

split
const params = [ "hello", true, 7 ]; const other = params.split('');
spread
const params = [ "hello", true, 7 ]; const other = [ ...params ];

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
split
spread

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 explain the benchmark and its different approaches.

**Benchmark Overview**

The benchmark is testing two different ways of creating an array from a string: using the `split()` method or the spread operator (`...`).

**Options Compared**

There are two options being compared:

1. **Using `split()`:**
	* This option uses the `split()` method to create an array from the string.
	* The `split()` method returns an array of substrings, where each substring is a part of the original string separated by a specified separator (in this case, no separator).
	* Example: `"hello".split('')` would return `[ "h", "e", "l", "l", "o" ].
2. **Using Spread Operator (`...`):**
	* This option uses the spread operator to create an array from the string.
	* The spread operator creates a new array by copying elements from an existing array or iterable (in this case, the string).
	* Example: `[ ..."hello" ]` would return `[ "h", "e", "l", "l", "o" ].

**Pros and Cons**

Both options have their pros and cons:

**Split()**

Pros:

* Widely supported across different browsers and environments.
* Easy to understand and use, especially for developers familiar with other string manipulation methods.

Cons:

* Can be slower than the spread operator in modern JavaScript engines due to the way it handles Unicode characters.
* May not work as expected if the input string contains non-ASCII characters or special characters.

**Spread Operator (`...`)**

Pros:

* Faster and more efficient than `split()` for large strings, especially those containing many consecutive ASCII characters.
* More modern and widely adopted syntax in JavaScript.

Cons:

* Less widely supported across different browsers and environments (Chrome 81 tested).
* May require additional configuration or setup to work correctly with certain edge cases (e.g., null or undefined values).

**Library/Tool Used**

There doesn't appear to be any specific library or tool used for this benchmark. The `split()` method is a built-in JavaScript method, and the spread operator is also a part of the ECMAScript standard.

**Special JS Feature/Syntax**

The test case uses the spread operator (`...`), which is a relatively modern JavaScript feature introduced in ECMAScript 2015 (ES6). It allows creating new arrays by copying elements from an existing array or iterable.

**Other Alternatives**

If you were to modify this benchmark to compare other methods for creating an array from a string, some alternatives could be:

* Using `Array.prototype.slice()` to create a copy of the string as an array.
* Using a library like Lodash's `map()` method to create a new array from the string.
* Using a custom implementation, such as using `String.prototype.charCodeAt()` and then iterating over the resulting array indices.

Keep in mind that these alternatives may have different performance characteristics, browser support, or code readability trade-offs compared to the original options.

Related benchmarks:

Random test (version: 0)

Comparing performance of: split vs spread

Created: 5 years ago by: Guest

Jump to the latest result

split

spread

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):