Benchmark: Array Find vs Some (shuffled array)

HTML Preparation code:

<script type="text/javascript" src="https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.core.js"></script>

Script Preparation code:

function shuffle(array) {
  let currentIndex = array.length,  randomIndex;

  // While there remain elements to shuffle.
  while (currentIndex != 0) {

    // Pick a remaining element.
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex--;

    // And swap it with the current element.
    [array[currentIndex], array[randomIndex]] = [
      array[randomIndex], array[currentIndex]];
  }

  return array;
}

Tests:

array find
var a = shuffle('The quick brown fox jumps over the lazy dog.'.split('')); var b = a.find(item => item === 'x');
array some
var a = shuffle('The quick brown fox jumps over the lazy dog.'.split('')); var b = a.some(item => item === 'x');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array find
array some

Fastest: N/A

Slowest: N/A

Latest run results:

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

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**Benchmark Definition JSON**

The provided benchmark definition represents a test that compares two methods for searching an array: `find` and `some`. The script preparation code defines a `shuffle` function, which randomizes the order of elements in an array. This is done to simulate real-world scenarios where data is shuffled or rearranged.

**Options Compared**

The `array find` and `array some` test cases compare the performance of two methods:

1. **Array Find**: The `find` method returns the first element in the array that satisfies the provided condition (in this case, finding an occurrence of the string 'x'). If no such element is found, it returns `undefined`.
2. **Array Some**: The `some` method returns a boolean value indicating whether at least one element in the array satisfies the provided condition (in this case, checking if any element is equal to 'x').

**Pros and Cons of Different Approaches**

* **Array Find**:
	+ Pros: More efficient when searching for a specific element, as it stops iterating as soon as it finds a match.
	+ Cons: Returns `undefined` if no matching element is found, which can be considered an error.
* **Array Some**:
	+ Pros: Returns a boolean value indicating whether any element matches the condition, making it easier to handle both true and false cases.
	+ Cons: May iterate over the entire array even if only one element matches the condition.

**Library**

The benchmark uses Lodash.js library, specifically `lodash.core.js`, which is included via an external HTML script tag. This library provides various utility functions, including the `find` and `some` methods used in the test cases.

**Special JS Feature or Syntax**

There are no specific JavaScript features or syntax mentioned in the benchmark that require special attention. The code uses standard ES5+ syntax and relies on built-in JavaScript features like arrays, loops, and conditionals.

**Other Alternatives**

For this type of comparison, other alternatives could include:

* Using a custom implementation for finding an element in an array, such as using binary search or linear search.
* Comparing the performance of `find` and `some` methods with other array searching algorithms, like `indexOf` or `includes`.
* Adding more test cases to cover different scenarios, such as:
	+ Searching for a specific element in a large array.
	+ Searching for multiple elements in an array.
	+ Using different data structures, like linked lists or sets.

Keep in mind that the choice of alternative depends on the specific requirements and goals of the benchmark.

Related benchmarks:

Array Find vs Some (shuffled array) (version: 0)

Comparing performance of: array find vs array some

Created: 4 years ago by: Guest

Jump to the latest result

array find

array some

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):