Benchmark: Some vs Find early find

Script Preparation code:

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

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Find
Some

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 5 months ago)

User agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/142.0.0.0 Safari/537.36

Browser/OS: Chrome 142 on Linux

View result in a separate tab

Test name	Executions per second
Find	163495776.0 Ops/sec
Some	157630288.0 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 definition and test cases.

**What is being tested?**

The benchmark is designed to compare two approaches:

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

Both approaches are used to find an element in the `data` array that matches a specific condition (`username === 'titi'`). However, the difference lies in their implementation:

* `find()` returns the first element that satisfies the condition (or undefined if no match is found).
* `some()` returns true if at least one element satisfies the condition (and false otherwise).

**Options being compared**

The benchmark compares the performance of these two approaches:

* `find()`: This approach is generally considered more efficient when only the first matching element is required. However, it can be slower than `some()` if no elements match.
* `some()`: This approach is often faster than `find()` because it returns immediately if a match is found, whereas `find()` has to scan the entire array.

**Pros and Cons**

Pros of `find()`:

* Returns the first matching element, which can be useful in certain scenarios.
* Can be more efficient when only one match is expected.

Cons of `find()`:

* May be slower than `some()` if no elements match.
* Requires an early termination condition to avoid unnecessary iterations.

Pros of `some()`

* Faster because it returns immediately if a match is found.
* More flexible, as it can return true even if only one element matches.

Cons of `some()`:

* Does not return the actual matching element.
* May be less efficient than `find()` when only one match is expected.

**Library and syntax used**

The benchmark uses the following JavaScript library:

* None explicitly stated. However, the array methods (`find()`, `some()`) are part of the built-in ECMAScript standard.

No special JavaScript features or syntax are mentioned in this specific benchmark.

**Other alternatives**

If you were to implement these two approaches from scratch, without using built-in array methods, you could use a loop-based approach. For example:

```javascript
function find(username) {
  for (let i = 0; i < data.length; i++) {
    if (data[i].username === username) return data[i];
  }
  return undefined;
}

function some(username) {
  let found = false;
  for (let i = 0; i < data.length; i++) {
    if (data[i].username === username) {
      found = true;
      break;
    }
  }
  return found;
}
```

Keep in mind that these implementations would likely be slower and less efficient than using the built-in `find()` and `some()` methods.

Related benchmarks:

Some vs Find early find (version: 0)

Comparing performance of: Find vs Some

Created: one year ago by: Registered User

Jump to the latest result

Find

Some

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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