Benchmark: array find vs for loop

Tests:

array find
var a = ['hello', 'a', 'bc']; var b = a.find(item => item === 'bc');
array for
var a = ['hello', 'a', 'bc']; for (let i = 0, leng = a.length; i < leng; i++){ if(a[i] === 'bc') { var b = a[i]; } }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
array find
array for

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):

LLMs can make mistakes. Check important info.

I'd be happy to explain the benchmark and its various components.

**Benchmark Overview**

The benchmark is designed to compare the performance of two approaches: using the `find()` method with an arrow function, and using a traditional `for` loop to achieve the same result. The test case uses JavaScript, which is a popular language for web development.

**Options Compared**

Two options are compared in this benchmark:

1. **Array find**: This option uses the `find()` method with an arrow function (`item => item === 'bc'`) to search for the value `'bc'` in the array.
2. **For loop**: This option uses a traditional `for` loop to iterate over the elements of the array and check if each element is equal to `'bc'`.

**Pros and Cons**

* **Array find**:
	+ Pros: concise, readable, and expressive code; easy to maintain and modify.
	+ Cons: may have performance overhead due to the creation of a new function object and the use of an arrow function (although this overhead is typically negligible).
* **For loop**:
	+ Pros: more control over the iteration process; can be faster for very large arrays or when specific optimization techniques are used.
	+ Cons: more verbose code; may require more maintenance effort.

In general, the `find()` method with an arrow function provides a concise and readable solution, while the traditional `for` loop offers more control but at the cost of verbosity. The choice between these two approaches depends on the specific requirements and performance considerations of the project.

**Library**

There is no explicit library mentioned in this benchmark. However, it's worth noting that some JavaScript engines may optimize or modify the behavior of certain libraries or built-in functions.

**Special JS Features or Syntax**

The `find()` method with an arrow function uses a feature of modern JavaScript called **arrow functions**, which were introduced in ECMAScript 2015 (ES6). Arrow functions provide a concise way to define small, single-purpose functions. They are often used for functional programming and can make code more readable.

**Other Alternatives**

For arrays, other methods that could be used to achieve similar results include:

* `indexOf()`: finds the index of the first occurrence of the specified value.
* `forEach()`: executes a function for each element in the array without returning any value.
* `map()` and `filter()`: transform or filter an array by applying a function to each element.

For loops, other alternatives include:

* `while` loops: more flexible than `for` loops but can be less readable.
* Array iteration using the `forEach()` method (although this is not as efficient as traditional indexing).

Overall, the choice of approach depends on the specific requirements and constraints of the project. The benchmark provides a good starting point for comparing the performance of different solutions.

Latest run results:

Run details: (Test run date: 6 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_6) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/68.0.3440.106 Safari/537.36

Browser/OS: Chrome 68 on Mac OS X 10.12.6

View result in a separate tab

Test name	Executions per second
array find	101422008.0 Ops/sec
array for	114068256.0 Ops/sec

Related benchmarks:

array find vs for loop (version: 0)

Pour antho & babtou

Comparing performance of: array find vs array for

Created: 6 years ago by: Guest

Jump to the latest result

array find

array for

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 28 days ago):