Benchmark: Parse vs Split - MeasureThat.net

Tests:

Split
let str = 'value1;value2;value3'; str.split(';');
Parse
let str = '["value1","value2","value3"]'; JSON.parse(str);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Split
Parse

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):

LLMs can make mistakes. Check important info.

**Benchmark Explanation**

The provided JSON represents a JavaScript microbenchmark test case on the MeasureThat.net website. The benchmark is designed to compare two approaches: splitting a string and parsing an array.

In the first test case, "Split", the benchmark definition uses a string with semicolon-separated values (`"value1;value2;value3"`). The script preparation code and HTML preparation code are empty, indicating that only the JavaScript code is executed. This benchmark tests how quickly the browser can split this string into an array.

In the second test case, "Parse", the benchmark definition uses a JSON-formatted string (`"[\"value1\",\"value2\",\"value3\"]"`). Similar to the previous case, only the JavaScript code is executed, and the script preparation code and HTML preparation code are empty. This benchmark tests how quickly the browser can parse this JSON-formatted string into an array.

**Options Comparison**

The two approaches being compared in this benchmark are:

1. **Split**: Splits a string using semicolons (`str.split(';')`).
2. **Parse**: Parses an array from a JSON-formatted string (`JSON.parse(str)`).

**Pros and Cons of Each Approach:**

**Split**

Pros:

* Fast and simple to implement
* Works well for strings with semicolon-separated values

Cons:

* Can be slow if the input string is very large, as it requires creating an intermediate array
* Not suitable for parsing JSON-formatted data

**Parse**

Pros:

* Suitable for parsing JSON-formatted data
* Can handle larger inputs efficiently, as it avoids creating intermediate arrays

Cons:

* More complex to implement than splitting a string
* May be slower for small input strings due to the overhead of JSON parsing

**Library and Purpose**

In this benchmark, the `JSON` library is used. The `JSON` library provides functions for working with JSON data, such as parsing a string into an object or array.

**Special JS Feature/Syntax**

There are no special JavaScript features or syntax being tested in this benchmark.

**Other Alternatives**

If you're interested in exploring alternative approaches to splitting strings and parsing arrays, here are some options:

* Instead of using `str.split(';')`, you could use a regular expression-based approach, such as:
```javascript
const regex = /\s+/g;
str = str.replace(regex, ',');
```
This approach uses a regular expression to replace whitespace characters with commas, effectively splitting the string.

For parsing arrays from JSON-formatted strings, you could consider using a library like `lodash` or `json-stringify-safe`, which provide more advanced JSON parsing and serialization capabilities.

Keep in mind that these alternatives may not be as efficient or straightforward as the original approaches, but they can offer additional flexibility and customization options.

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/110.0.0.0 Safari/537.36

Browser/OS: Chrome 110 on Linux

View result in a separate tab

Test name	Executions per second
Split	14363938.0 Ops/sec
Parse	2802490.8 Ops/sec

Related benchmarks:

Parse vs Split (version: 0)

Comparing performance of: Split vs Parse

Created: 6 years ago by: Guest

Jump to the latest result

Split

Parse

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):