Benchmark: array bool 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:

bool find
var a = [{brokerCode: 'ZP', 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: 'ZP', 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
bool 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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I'd be happy to explain the benchmark and its various aspects.

**Benchmark Overview**

The MeasureThat.net website allows users to create and run JavaScript microbenchmarks. The provided JSON represents a benchmark that tests two approaches: `Array.prototype.find()` and `Array.prototype.some()`, both used with a conditional statement to check if an element in an array matches a specific criterion.

**What is tested?**

In the benchmark, we have two test cases:

1. `bool find`: This test case uses `Array.prototype.find()` to search for an object in the `a` array that has a `brokerCode` property equal to `'PENDING'`. The resulting value from this search is then converted to a boolean using the `Boolean()` function.
2. `some`: This test case uses `Array.prototype.some()` to check if any element in the `a` array has a `brokerCode` property equal to `'PENDING'`.

**Options compared**

The two options being compared are:

* **Array.prototype.find()**: This method returns the first element in the array that satisfies the provided testing function. If no elements satisfy the testing function, it returns `undefined`. In this case, the resulting value is then converted to a boolean using `Boolean()`.
* **Array.prototype.some()**: This method returns `true` if at least one element in the array satisfies the provided testing function, and `false` otherwise.

**Pros and Cons**

Here are some pros and cons of each approach:

* **Array.prototype.find()**:
	+ Pros: Can be more efficient when only searching for a single matching element.
	+ Cons: Returns `undefined` if no elements match, which can lead to unnecessary conversions or errors.
* **Array.prototype.some()**:
	+ Pros: More straightforward and easier to understand, as it returns a boolean value indicating the presence of at least one matching element.
	+ Cons: May be slower than `find()` because it needs to iterate over all elements in the array.

**Library usage**

In this benchmark, Lodash is used as a dependency. Specifically, it's imported as part of the HTML preparation code:

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

Lodash provides various utility functions, but in this case, we're only using its `core` module, which seems to be a minimal implementation of the Lodash core functionality.

**Other considerations**

* **Null or undefined values**: Neither `find()` nor `some()` handles null or undefined values out of the box. Depending on the specific use case, additional checks or handling might be necessary.
* **Array length and performance**: The performance difference between these two methods can be significant for large arrays.

**Alternatives**

Other alternatives to `Array.prototype.find()` and `Array.prototype.some()` include:

* **Manual loops**: Writing manual loops to iterate over the array elements can provide more control, but is also generally less efficient.
* **Higher-order functions**: Using higher-order functions like `reduce()` or `every()`, which are not part of the standard Array prototype, might offer alternative approaches depending on the specific requirements.

In summary, `Array.prototype.find()` and `Array.prototype.some()` are both useful methods with different strengths and weaknesses. The choice between them depends on the specific use case, including the desired behavior for null or undefined values, array length, and performance considerations.

Related benchmarks:

array bool find vs some (version: 0)

without PENDING

Comparing performance of: bool find vs some

Created: 4 years ago by: Guest

Jump to the latest result

bool 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):