Benchmark: some vs. findIndex vs find

Script Preparation code:

var hasZero = [];
var withoutZero = [];
for (var i = 0; i < 10000; i++) {
  hasZero.push(Math.floor(Math.random() * 1000));
  withoutZero.push(Math.floor(Math.random() * 1000) + 1)
}

Tests:

some
const tempResult = !!Math.round(Math.random()) ? hasZero.some(v => v === 0) : withoutZero.some(v => v === 0);
findIndex
const tempResult = !!Math.round(Math.random()) ? (-1 === hasZero.findIndex(v => v === 0)) : (-1 === withoutZero.findIndex(v => v === 0));
find
const tempResult = !!Math.round(Math.random()) ? !!hasZero.find(v => v === 0) : !!withoutZero.find(v => v === 0);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
some
findIndex
find

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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Let's break down the provided benchmark and explain what is being tested, compared, and the pros and cons of each approach.

**Benchmark Overview**

The provided JSON represents a JavaScript microbenchmark created using MeasureThat.net. The benchmark tests three different methods for checking if an array contains a zero value: `some`, `findIndex`, and `find`. The script preparation code generates two arrays, `hasZero` and `withoutZero`, each containing 10,000 random integers.

**Options Compared**

The three options being compared are:

1. **some**: uses the `some()` method to check if at least one element in the array satisfies a condition.
2. **findIndex**: uses the `findIndex()` method to find the index of the first element that satisfies a condition, and then checks if the index is -1 (indicating that no such element was found).
3. **find**: uses the `find()` method to find the first element that satisfies a condition.

**Pros and Cons of Each Approach**

* **some**:
	+ Pros: simple and efficient, especially for small arrays.
	+ Cons: may be slower for large arrays due to the need to iterate over all elements.
* **findIndex**:
	+ Pros: can be faster than `some` for large arrays since it only needs to find one element.
	+ Cons: may be slower for small arrays or when the condition is not met, as it incurs an extra function call and array lookup.
* **find**:
	+ Pros: can be the fastest option for large arrays, as it returns as soon as it finds a matching element.
	+ Cons: may be slower for very small arrays (e.g., with only one element) due to the overhead of finding the first matching element.

**Library and Its Purpose**

In this benchmark, no libraries are explicitly mentioned. However, `some()`, `findIndex()`, and `find()` are all part of the ECMAScript standard, so they are built-in methods in JavaScript.

**Special JS Feature or Syntax (None)**

There is no special feature or syntax used in this benchmark that requires additional explanation.

**Alternative Approaches**

If you were to implement these options from scratch, without using the `some()`, `findIndex()`, and `find()` methods, you would need to write custom functions to achieve similar results. For example:

* **some**: a simple loop-based function to iterate over all elements in the array.
* **findIndex**: a function that iterates over the array until it finds a matching element or reaches the end of the array.
* **find**: a function that iterates over the array until it finds a matching element.

Keep in mind that these custom implementations would likely be slower than using the built-in `some()`, `findIndex()`, and `find()` methods, which are optimized for performance.

Related benchmarks:

some vs. findIndex vs find (version: 0)

Comparing performance of: some vs findIndex vs find

Created: 3 years ago by: Guest

Jump to the latest result

some

findIndex

find

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):