Benchmark: IndexOf vs Split return array

Script Preparation code:

var test1 = 'test|tester|testing|tester|testing|test|tester|testing|tester|testing'
var test2 = 'test|tester|testing'

function dividirCadena(cadena, caracterSeparador, partes = []) {
  const indice = cadena.indexOf(caracterSeparador);

  if (indice === -1) {
    // No se encontró el caracter separador, se agrega la cadena restante y se termina la recursion
    partes.push(cadena);
    return partes;
  }

  // Se agrega la primera parte a la lista
  partes.push(cadena.slice(0, indice));

  // Se llama a la función recursivamente con la siguiente parte de la cadena
  return dividirCadena(cadena.slice(indice + 1), caracterSeparador, partes);
}

Tests:

SPLIT
var result1 = (test1.split('|')); var result2 = (test2.split('|'));
IndexOf
var result1 = dividirCadena(test1, "." ); var result2 = dividirCadena(test2, "." );

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
SPLIT
IndexOf

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/122.0.0.0 Safari/537.36

Browser/OS: Chrome 122 on Windows

View result in a separate tab

Test name	Executions per second
SPLIT	7025447.5 Ops/sec
IndexOf	4007197.5 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.

**Benchmark Overview**

The benchmark is designed to compare the performance of two approaches: splitting a string using the `split()` method versus using the `indexOf()` method with a custom recursive function.

**Split() Method**

The `split()` method splits a string into an array of substrings based on a specified separator. In this case, the separator is the pipe (`|`) character. The `split()` method returns an array of strings.

**IndexOf() Method**

The `indexOf()` method searches for the first occurrence of a specified value (in this case, the pipe (`|`) character) in a string and returns its index. If the value is not found, it returns -1. This method can be used to implement a custom recursive function that splits the string into parts.

**Benchmark Definition**

The benchmark definition provides two scripts:

1. `SPLIT`: This script uses the `split()` method to split the input string into an array of substrings.
2. `IndexOf`: This script uses the `indexOf()` method with a custom recursive function to split the input string into an array of substrings.

**Options Compared**

The benchmark compares two options:

1. **Split() Method**: Uses the built-in `split()` method to split the string.
2. **IndexOf() Method with Custom Recursive Function**: Uses the `indexOf()` method with a custom recursive function to split the string.

**Pros and Cons**

**Split() Method:**

Pros:

* Fast and efficient
* Built-in method, so it's well optimized by JavaScript engines

Cons:

* Requires an extra step to iterate over the resulting array
* May not be as flexible as a custom solution

**IndexOf() Method with Custom Recursive Function:**

Pros:

* Can be more flexible than the `split()` method
* Can handle edge cases where the separator is not found

Cons:

* Slower and less efficient due to the recursive function overhead
* Requires more code and maintenance

**Library Used**

The benchmark uses a custom library (not explicitly stated, but inferred from the code) that provides the `dividirCadena()` function. This function is used to split the input string into parts using the `indexOf()` method.

**Special JS Feature or Syntax**

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

**Other Alternatives**

If you want to improve the performance of this benchmark, you could consider:

* Using a more efficient data structure, such as an array with fixed size
* Implementing a hybrid approach that combines the `split()` method and the custom recursive function
* Using a library or framework that provides optimized string splitting algorithms

Keep in mind that these alternatives would require significant changes to the benchmark code and might not necessarily improve performance.

In summary, this benchmark is designed to compare two approaches for splitting strings: using the built-in `split()` method versus implementing a custom recursive function with the `indexOf()` method. The benchmark provides insights into the relative performance of these two options.

Related benchmarks:

IndexOf vs Split return array (version: 0)

Comparing performance of: SPLIT vs IndexOf

Created: 2 years ago by: Guest

Jump to the latest result

SPLIT

IndexOf

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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