Benchmark: Test custom omit functions

Script Preparation code:

var black = 'black'
var green = 'green'
var orange = 'orange'
var red = 'red'
var darkRed = 'darkRed'
var blue = 'blue'
var lightBlue = 'lightBlue'
var navy = 'navy'

var basePalette = {
	black,
  green,
  orange,
  red,
  darkRed,
  blue,
  lightBlue,
  navy
}

Tests:

custom method recursion
function omit(keys, obj) { if (!keys.length) return obj const { [keys.pop()]: omitted, ...rest } = obj; return omit(keys, rest); } omit(['orange','red', 'darkRed'], basePalette);
custom method non-recursion
function omit(keys, obj) { return keys.reduce((a, e) => { const { [e]: omit, ...rest } = a; return rest; }, obj) } omit(['orange','red', 'darkRed'], basePalette);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
custom method recursion
custom method non-recursion

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

I'll break down the benchmark definition and test cases to help explain what's being tested.

**Benchmark Definition Overview**

The benchmark measures the performance of two custom `omit` functions in JavaScript, which are used to remove specific keys from an object. The benchmark compares these two approaches:

1. Recursion-based approach (`custom method recursion`)
2. Iterative (non-recursion) approach (`custom method non-recursion`)

**Custom `omit` Function**

The custom `omit` function is designed to remove specific keys from an object. It takes in two parameters: `keys` and `obj`. The function uses the following logic:

* If no keys are provided, it returns the original object.
* Otherwise, it iterates through the `keys` array in reverse order (using `pop()`).
* For each key, it creates a new object (`rest`) that excludes the current key.
* It then calls itself recursively with the updated `keys` array and the new object (`rest`).

The two custom `omit` functions differ in their approach:

**Recursion-based Approach**

This function uses recursion to remove keys from the object. The recursive logic is as follows:

* If no keys are provided, it returns the original object.
* Otherwise, it creates a new object (`omitted`) that excludes the first key in the `keys` array.
* It then calls itself recursively with the updated `keys` array (i.e., `keys.pop()`).
* This process repeats until all keys have been removed.

**Non-Recursion Approach**

This function uses iteration to remove keys from the object. The iterative logic is as follows:

* It uses the `reduce()` method to iterate through the `keys` array.
* For each key, it creates a new object (`omitted`) that excludes the current key.
* It then returns the final object (`rest`) after all iterations have completed.

**Pros and Cons**

Here are some pros and cons of each approach:

**Recursion-based Approach**

Pros:

* Easier to implement, as it uses a familiar recursive pattern.
* Can be more intuitive for developers who are comfortable with recursion.

Cons:

* May lead to stack overflow errors if the number of keys is very large.
* Can result in slower performance due to repeated function calls and overhead.

**Non-Recursion Approach**

Pros:

* Avoids potential stack overflow issues, as it uses iteration instead of recursion.
* Can be more efficient, as it avoids repeated function calls and overhead.

Cons:

* Requires a good understanding of the `reduce()` method and its use case.
* May be less intuitive for developers who are not familiar with iteration.

**Library Usage**

Neither test case appears to use any external libraries. The custom `omit` functions rely solely on built-in JavaScript features.

**Special JavaScript Features or Syntax**

There is no mention of special JavaScript features or syntax in the benchmark definition. Both approaches only utilize standard JavaScript features and do not involve advanced techniques like async/await, generators, or ES6+ classes.

**Alternative Approaches**

Other alternative approaches to implement an `omit` function could include:

* Using a library like Lodash, which provides a `pick` function that can be used to remove keys from an object.
* Utilizing the `Object.fromEntries()` method to create a new object with only the desired properties.
* Leveraging the spread operator (`...`) and destructuring assignment syntax to simplify the implementation.

However, for this specific benchmark, the custom `omit` functions demonstrate two distinct approaches to removing keys from an object, which highlights their performance characteristics.

Related benchmarks:

Test custom omit functions (version: 0)

Comparing performance of: custom method recursion vs custom method non-recursion

Created: 3 years ago by: Guest

Jump to the latest result

custom method recursion

custom method non-recursion

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

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