Benchmark: array boolean find vs some

HTML Preparation code:

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

Tests:

boolean find
var a = [{brokerCode: 'PENDING', prediction: -2777500, probability: 1}, {brokerCode: 'AK', prediction: 123523, probability: 1}, {brokerCode: 'CP', prediction: 1000000, probability: 1}]; var b = Boolean(a.find(item => item.brokerCode === 'PENDING'));
some
var a = [{brokerCode: 'PENDING', prediction: -2777500, probability: 1}, {brokerCode: 'AK', prediction: 123523, probability: 1}, {brokerCode: 'CP', prediction: 1000000, probability: 1}]; var b = a.some(item => item.brokerCode === 'PENDING');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
boolean find
some

Fastest: N/A

Slowest: N/A

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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's being tested.

**Benchmark Overview**

The benchmark compares two approaches to check if an element in an array satisfies a condition:

1. `Array.prototype.find()`: This method returns the first element that passes the test implemented by the provided function.
2. `Array.prototype.some()`: This method returns `true` if at least one element in the array passes the test, and `false` otherwise.

**Library Used**

The benchmark uses Lodash.js library, which provides a set of helper functions for functional programming. In this case, the `find()` function is used to find an element that matches a condition.

**JavaScript Features/Syntax**

Neither of the two approaches requires any special JavaScript features or syntax. They are standard Array methods in JavaScript.

**Benchmark Preparation Code**

The preparation code includes a single line of JavaScript code that defines an array `a` with three elements, and a variable `b` is set to `Boolean(a.find(item => item.brokerCode === 'PENDING'))`. This defines the benchmark data.

For the second test case, the preparation code is similar, but uses the `some()` method instead:

`var b = a.some(item => item.brokerCode === 'PENDING');`

**Approach Comparison**

The two approaches are compared in terms of their execution performance. The benchmark measures the number of executions per second for each approach.

Here's a brief summary of pros and cons for each approach:

1. `Array.prototype.find()`:
	* Pros: Finds the first matching element, which can be useful if you need to perform further operations on that specific element.
	* Cons: May return `undefined` if no elements match the condition, which can lead to errors in some cases. Also, it's generally slower than `some()`.
2. `Array.prototype.some()`:
	* Pros: Returns a boolean value indicating whether at least one element matches the condition, making it easier to handle cases where no elements match.
	* Cons: May be slower than `find()` for large arrays since it doesn't return the matching element.

**Other Considerations**

When choosing between these two approaches, consider the following factors:

* Use `find()` when you need to perform further operations on the matched element, or when you want to ensure that exactly one element matches the condition.
* Use `some()` when you only need to determine whether at least one element matches the condition, without needing to access the individual elements.

**Alternatives**

If you don't have access to Lodash.js library, you can implement these methods from scratch using a simple loop or recursion. However, this approach would likely be slower and less efficient than using the built-in `find()` and `some()` methods.

In conclusion, this benchmark compares two standard Array methods in JavaScript: `Array.prototype.find()` and `Array.prototype.some()`. The choice of which method to use depends on your specific use case and performance requirements.

Related benchmarks:

array boolean find vs some (version: 0)

Comparing performance of: boolean find vs some

Created: 4 years ago by: Guest

Jump to the latest result

boolean find

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):