Benchmark: Array.prototype.slice vs _.take 1M

HTML Preparation code:

<script src="lodash.js"></script>

Script Preparation code:

var array = [...Array(1000000).keys()];

Tests:

Lodash take
_.take(array,77000)
Array.prototype.slice
array.slice(0,77000)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Lodash take
Array.prototype.slice

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 9 months ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 YaBrowser/25.6.0.0 Safari/537.36

Browser/OS: Yandex Browser 25 on Windows

View result in a separate tab

Test name	Executions per second
Lodash take	6147.0 Ops/sec
Array.prototype.slice	14909.5 Ops/sec

Autogenerated LLM Summary (model gpt-4o-mini, generated 9 months ago):

LLMs can make mistakes. Check important info.

The benchmark provided is designed to compare the performance of two different methods for extracting a subset of elements from an array in JavaScript:

1. **Array.prototype.slice** method
2. **Lodash's _.take** function

### Benchmark Overview

- **Preparation Code**: 
  - An array of size 1,000,000 is created using `var array = [...Array(1000000).keys()];`, which generates an array containing integers from 0 to 999,999.
  - Lodash (`lodash.js`) is included in the HTML preparation code as it provides utility functions including `_.take`.

### Test Cases

1. **Lodash take**:
   - Benchmark Definition: `_.take(array,77000)`
   - Test Name: "Lodash take"
   - This test uses the `_.take` method from the Lodash library to return the first 77,000 elements of the array.

2. **Array.prototype.slice**:
   - Benchmark Definition: `array.slice(0,77000)`
   - Test Name: "Array.prototype.slice"
   - This test uses JavaScript's native `slice` method to achieve the same goal, extracting elements from index 0 to index 77,000.

### Performance Results:

The benchmark results show the number of executions per second for each method:

- **Array.prototype.slice**: 14,909.53 executions/second
- **Lodash take**: 6,146.96 executions/second

### Pros and Cons

#### Array.prototype.slice

**Pros**:
- **Performance**: The native `slice` method is significantly faster in this benchmark context, executing over twice as many times per second compared to `_.take`.
- **Built-in Functionality**: No need for an external library; it's part of the standard JavaScript language.

**Cons**:
- **Limited Functionality**: `slice` is a more general-purpose function that can only extract sections of an array, without additional features.

#### Lodash's _.take

**Pros**:
- **Chainable**: Lodash methods can be easily chained together, making it useful for more complex data manipulation sequences.
- **Readability**: For some developers, using utility functions like `_.take` can improve code readability, conveying the intention of taking a specified number of elements more explicitly.

**Cons**:
- **Performance Overhead**: It introduces additional overhead due to being a library function, resulting in slower execution in this case.
- **Dependency**: Requires the Lodash library to be included, which may increase the size of the application.

### Other Considerations

The choice between these two methods can depend on the specific context in which they're used:

- **Complexity of Operations**: If you need to conduct more sophisticated manipulation along with taking elements (like chaining with other Lodash functions), using Lodash might be more beneficial despite the performance cost.
- **Environment Constraints**: In resource-constrained environments where performance is critical, using native methods is generally preferred for efficiency.
- **Familiarity and Codebase Standards**: If a codebase primarily uses Lodash, sticking with `_.take` could maintain consistency.

Overall, this benchmark demonstrates a clear performance advantage for JavaScript's native `Array.prototype.slice` method over Lodash's `_.take` for a straightforward subset extraction operation, indicating that for maximum performance in such scenarios, native methods should be the preferred choice.

Related benchmarks:

Array.prototype.slice vs _.take 1M (version: 1)

Comparing performance of: Lodash take vs Array.prototype.slice

Created: 9 months ago by: Registered User

Jump to the latest result

Lodash take

Array.prototype.slice

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model gpt-4o-mini, generated 9 months ago):