Benchmark: js array functions comparisons

Tests:

def
const a = 'randomText'; if (a !== 'text' && a !== 'tex2' && a !== 'text3' && a !== 'text4' && a !== 'text6'){}
includes
const a = 'randomText'; const arr = ['a', 'b', 'c', 'd', 'e', 'f', 'g']; if (!arr.includes(a)){}
filter
const a = 'randomText'; const arr = ['a', 'b', 'c', 'd', 'e', 'f', 'g']; if (arr.filter(item => item === a).length === 0){}
every
const a = 'randomText'; const arr = ['a', 'b', 'c', 'd', 'e', 'f', 'g']; if (arr.every(item => item !== a)){}
some
const a = 'randomText'; const arr = ['a', 'b', 'c', 'd', 'e', 'f', 'g']; if (!arr.some(item => item === a)){}

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
def
includes
filter
every
some

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/112.0.0.0 Safari/537.36

Browser/OS: Chrome 112 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
def	1030122368.0 Ops/sec
includes	1032758784.0 Ops/sec
filter	107909792.0 Ops/sec
every	126288752.0 Ops/sec
some	126366240.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down what's being tested in this benchmark.

**Benchmark Overview**

The benchmark is comparing four different array functions: `includes`, `filter`, `every`, and `some`. These functions are used to check if an element exists or meets certain conditions within an array.

**Options Compared**

1. `includes()`: Checks if a specific value exists within the array using the `includes()` method.
2. `filter()`: Creates a new array with elements that pass a test provided as a function, filtering out elements that fail the test.
3. `every()`: Returns `true` if all elements in an array pass the test implemented by the provided function.
4. `some()`: Returns `true` if at least one element in an array passes the test implemented by the provided function.

**Pros and Cons of Each Approach**

1. **`includes()`**:
	* Pros: Simple, efficient, and widely supported.
	* Cons: Can be slower for large arrays due to the use of a linear search algorithm.
2. **`filter()`**:
	* Pros: Flexible, allows for complex filtering conditions, and can return new arrays or modify existing ones.
	* Cons: Can be slower than `includes()` due to the overhead of creating a new array, and may require more memory.
3. **`every()`**:
	* Pros: Simple, efficient, and widely supported.
	* Cons: Requires all elements in the array to pass the test; if any element fails, returns false.
4. **`some()`**:
	* Pros: Flexible, allows for complex testing conditions, and can return true quickly when a match is found.
	* Cons: Can be slower than `includes()` due to the overhead of checking each element, and may not be suitable for arrays with no matches.

**Library Usage**

None mentioned in this benchmark.

**Special JS Features or Syntax**

No special features or syntax are used in this benchmark. The code is straightforward JavaScript.

**Other Alternatives**

For array operations, other alternatives include:

1. **`indexOf()`**: Similar to `includes()`, but can be slower and less flexible.
2. **`forEach()`**: A method that calls a provided function for each element in an array, allowing for more control over the operation.
3. **`reduce()`**: A method that applies a reducing function to each element in an array, allowing for more complex operations.

For filtering or testing arrays, other alternatives include:

1. **`map()`, `forEach()`, and `reduce()`** together: These methods can be used to filter or transform arrays by applying functions to each element.
2. **`Set` data structure**: Can be used to quickly check for membership in an array-like collection.

Keep in mind that the choice of method depends on the specific requirements of your use case, performance considerations, and personal preference.

Related benchmarks:

js array functions comparisons (version: 0)

qweqwe

Comparing performance of: def vs includes vs filter vs every vs some

Created: one year ago by: Guest

Jump to the latest result

def

includes

filter

every

some

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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