Benchmark: Some vs Find bool vs findIndex bool

Script Preparation code:

var data = []

for (let i = 0; i < 5000; ++i) data.push({ username: 'toto' })
data.push({ username: 'titi' })
for (let i = 0; i < 2500; ++i) data.push({ username: 'toto' })

Tests:

Find
!!data.find(e => e.username === 'titi')
Some
data.some(e => e.username === 'titi')
FindIndex
data.findIndex(e => e.username === 'titi')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Find
Some
FindIndex

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.15; rv:124.0) Gecko/20100101 Firefox/124.0

Browser/OS: Firefox 124 on Mac OS X 10.15

View result in a separate tab

Test name	Executions per second
Find	56698.6 Ops/sec
Some	54323.8 Ops/sec
FindIndex	57000.2 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and its test cases.

**Benchmark Definition JSON**

The provided benchmark definition defines three microbenchmarks:

1. `!!data.find(e => e.username === 'titi')`
2. `data.some(e => e.username === 'titi')`
3. `data.findIndex(e => e.username === 'titi')`

These benchmarks measure the performance of different methods for finding an element with a specific property in an array.

**Options Compared**

The three test cases compare the following options:

1. **`!!data.find(e => e.username === 'titi')`**: This option uses the `find()` method, which returns the first element that satisfies the provided condition. The double-bang (`!!`) operator is used to force a re-evaluation of the expression, even if the result is cached.
2. **`data.some(e => e.username === 'titi')`**: This option uses the `some()` method, which returns `true` as soon as the first element that satisfies the provided condition is found.
3. **`data.findIndex(e => e.username === 'titi')`**: This option uses the `findIndex()` method, which returns the index of the first element that satisfies the provided condition.

**Pros and Cons**

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

1. **`!!data.find(e => e.username === 'titi')`**:
	* Pros: Can be more accurate if the cached result is incorrect, but may incur additional overhead due to the re-evaluation.
	* Cons: May not be as efficient as other options due to the extra computation.
2. **`data.some(e => e.username === 'titi')`**:
	* Pros: Generally faster and more efficient than `find()` or `findIndex()`, but may return incorrect results if not used carefully (e.g., when using a large array).
	* Cons: May not work correctly if the condition is not met, and can be misleading if not handled properly.
3. **`data.findIndex(e => e.username === 'titi')`**:
	* Pros: Efficient and accurate, with no additional overhead compared to `some()`.
	* Cons: May return -1 if no element satisfies the condition.

**Library: Lodash**

The `find()` method is typically implemented in libraries like Lodash, which provides a more convenient way to perform array operations. In this benchmark, Lodash is used implicitly through the `!!` operator and the `data.find()` method call.

**Special JS Feature/Syntax: None**

There are no special JavaScript features or syntaxes mentioned in the provided benchmark definition.

**Other Alternatives**

If you're looking for alternative methods to measure array performance, consider the following:

1. **Using `forEach()`**: Instead of `find()`, `some()`, and `findIndex()`, you could use a simple `forEach()` loop to iterate through the array.
2. **Benchmarking with `perf_hooks`**: The `perf_hooks` library provides high-resolution timing functions that can be used to benchmark performance.
3. **Using WebAssembly (WASM)**: If you're targeting a specific architecture or need extreme performance, consider using WASM, which allows for compilation of JavaScript code into binary format.

Keep in mind that each alternative method may have its own pros and cons, and the best approach depends on your specific use case and requirements.

Related benchmarks:

Some vs Find bool vs findIndex bool (version: 0)

Comparing performance of: Find vs Some vs FindIndex

Created: 2 years ago by: Guest

Jump to the latest result

Find

Some

FindIndex

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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