Benchmark: objects array 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:

array find
var a = [{id:'hello', value: 1}, {id:'a', value: 2}, {id:'bc', value: 3}]; var b = a.find(item => item.id === 'bc');
array some
var a = [{id:'hello', value: 1}, {id:'a', value: 2}, {id:'bc', value: 3}]; var b = a.some(item => item.id === 'bc');

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:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its options.

**Benchmark Overview**

The MeasureThat.net website provides a microbenchmarking platform to compare the performance of different JavaScript approaches. The current benchmark compares two methods for filtering an array:

1. `find()` method (ES6 spread operator)
2. `some()` method (traditional concat() method)

**Options Compared**

The `find()` and `some()` methods are compared in terms of their execution time, which is measured as the number of executions per second.

**Pros and Cons**

* **`find()` method**: This method returns the first element that satisfies the provided condition. It's a more concise and expressive way to filter arrays, but it can be slower than other methods for large datasets.
	+ Pros: More readable code, doesn't require indexing or looping through the array.
	+ Cons: Can return `undefined` if no elements match the condition, which may lead to unexpected behavior in some cases.
* **`some()` method**: This method returns a boolean indicating whether at least one element matches the provided condition. It's often faster than `find()` for large datasets because it can short-circuit as soon as it finds a matching element.
	+ Pros: Faster for large datasets, can short-circuit execution.
	+ Cons: Can be less readable code, may require indexing or looping through the array.

**Library and Special Features**

The benchmark uses Lodash.js library, which provides utility functions like `find()` and `some()`. The `find()` method is part of the ES6 spread operator feature, introduced in ECMAScript 2015 (ES6). There are no special JavaScript features or syntax used beyond what's standard in modern browsers.

**Other Alternatives**

For filtering arrays, other methods exist, such as:

* `filter()`: Returns a new array with all elements that satisfy the provided condition.
* `indexOf()` and `lastIndexOf()`: Return the index of the first occurrence of the specified element or return -1 if not found.
* Manual looping using indexing (e.g., `for` loop, `forEach()`).

The choice of method depends on the specific use case, performance requirements, and personal preference. MeasureThat.net's benchmark helps compare these options in a controlled environment.

In summary, the benchmark compares two common methods for filtering arrays: `find()` (ES6 spread operator) vs `some()` (traditional concat() method). The results highlight the trade-offs between readability, conciseness, and performance.

Related benchmarks:

objects array find vs some (version: 0)

Compare the new ES6 spread operator with the traditional concat() method

Comparing performance of: array find vs array some

Created: 2 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):