Benchmark: split vs splitstring

Tests:

splitstring
function splitString(str = "", splitter = "", includeSplitter = false) { function getlast(string, len) { if (len > string.length) return -1; let s = ""; let o = string.length - 1 - len; for (let i = string.length - 1; i > o; i--) { s = string[i] + s; } return s; } if (typeof str !== "string" || typeof splitter !== "string") return str; if (!str.length) return [str]; let strPieces = []; if (!splitter.length) { for (let p = 0; p < str.length; p++) { strPieces.push(str[p]); } return [...strPieces]; } let splitterLen = splitter.length; let strCurPiece = ""; let tempStr = ""; for (let v = 0; v < str.length; v++) { strCurPiece += str[v]; if (strCurPiece.length < splitterLen) continue; //let lastchars = strCurPiece.last(splitterLen); let lastchars = getlast(strCurPiece, splitterLen); if (lastchars !== splitter) continue; if (includeSplitter) { strPieces.push(strCurPiece); strCurPiece = ""; continue; } let lenny = strCurPiece.length - splitterLen; for (let y = 0; y < lenny; y++) { tempStr += strCurPiece[y]; } strPieces.push(tempStr); strCurPiece = ""; tempStr = ""; } if (strCurPiece.length) strPieces.push(strCurPiece); return [...strPieces]; } splitString('dfasfasfaqqq','qqq')
split
'dfasfasfaqqq'.split('qqq')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
splitstring
split

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/125.0.0.0 Safari/537.36

Browser/OS: Chrome 125 on Windows

View result in a separate tab

Test name	Executions per second
splitstring	2937701.5 Ops/sec
split	34363596.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested, compared, and their pros and cons.

**Benchmark Definition**

The benchmark is defined by two test cases:

1. `splitString` (individual function)
2. `'dfasfasfaqqq'.split('qqq')` (string method)

Both tests aim to measure the performance of splitting a string into substrings using different approaches.

**Options being compared**

There are two main options being compared:

A) **Individual function: `splitString`**
B) **String method: `.split()`**

Let's examine each option in detail.

**A) Individual function: `splitString`**

The `splitString` function takes three arguments: `str`, `splitter`, and `includeSplitter`. It splits the input string into substrings based on the specified splitter. The function returns an array of substring pieces.

Pros:

* Customizable (e.g., handling edge cases, specifying inclusion/exclusion of splitters)
* Can be optimized for specific use cases

Cons:

* More complex implementation compared to the built-in `.split()` method
* May require additional memory allocation for the `strPieces` array

**B) String method: `.split()`**

The `.split()` method is a built-in JavaScript function that splits a string into an array of substrings based on a specified separator (default is whitespace).

Pros:

* Simple and efficient implementation
* Built-in, so no additional memory allocation required
* Widely supported across browsers

Cons:

* Less customizable compared to the `splitString` function
* May not handle edge cases as effectively (e.g., handling empty strings or separators)

**Library/Functionality**

The `splitString` function uses a custom implementation that includes an auxiliary function, `getlast()`, which extracts the last `n` characters from a string. This is necessary to efficiently compare substrings with the specified length.

**Special JS feature/syntax**

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

**Other alternatives**

If you wanted to implement this benchmark using different approaches, here are some alternative options:

1. **Regular expressions**: Use regular expressions (e.g., `/q+/`) to split the string.
2. **Array.prototype.slice()**: Split the string by iterating over the array and applying `slice()` to each element.
3. **Other custom implementations**: Explore other algorithms for splitting strings, such as using a loop to iterate over the string and split it manually.

Keep in mind that these alternatives may have different performance characteristics compared to the original implementation.

Related benchmarks:

split vs splitstring (version: 0)

Comparing performance of: splitstring vs split

Created: one year ago by: Registered User

Jump to the latest result

splitstring

split

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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