Benchmark: lodash each & lodash map

HTML Preparation code:


<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>

Script Preparation code:

var value = [{a: 30310}, {b: 100303}, {c: 3040494}, {d: 6542321}, {e: 13123531}]

Tests:

lodash each
_.each(value, function(v,i) {console.log(v)})
lodash map
_.map(value, function(v,i) {console.log(v)})

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
lodash each
lodash map

Fastest: N/A

Slowest: N/A

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Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):

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Let's dive into the details of this benchmark.

**Benchmark Description**

This benchmark compares two different approaches to iterating over an array of objects using JavaScript. The two test cases are:

1. `lodash each`: This test uses the `_each` function from the Lodash library to iterate over the array and log each object to the console.
2. `lodash map`: This test uses the `_map` function from the Lodash library to create a new array by iterating over the original array, logging each object to the console, and returning the new array.

**Library Used**

The benchmark uses the Lodash library, which is a popular JavaScript utility library that provides a wide range of functions for tasks like iteration, data manipulation, and functional programming. In this case, the `_each` and `_map` functions are used from the library.

**Options Compared**

In this benchmark, two options are compared:

* Using `_.each` (lodash each) to iterate over the array
* Using `_.map` (lodash map) to create a new array by iterating over the original array

The key difference between these two approaches is that `_.each` simply iterates over the array and logs each object to the console, while `_.map` creates a new array with the results of the iteration.

**Pros/Cons of Different Approaches**

Here are some pros and cons of each approach:

* **Lodash Each ( _.each )**
	+ Pros:
		- Simple to use
		- No unnecessary memory allocation for a new array
	+ Cons:
		- May not be suitable for large datasets, as it logs each object individually
* **Lodash Map ( _.map )**
	+ Pros:
		- Creates a new array with the results of the iteration, which can be useful for further processing
		- More memory-efficient than `_.each` if the resulting array is used later
	+ Cons:
		- May allocate more memory than necessary if the resulting array is not used
		- Slightly slower than `_.each` due to the overhead of creating a new array

**Other Considerations**

When choosing between these two approaches, consider the following factors:

* Do you need to create a new array with the results of the iteration? If yes, use `_.map`. If not, use `_.each`.
* Are you working with large datasets? If yes, consider using `_.each` to avoid logging each object individually.
* Are memory allocation and performance critical concerns? If yes, use `_.map` to create a new array with the results of the iteration.

**Alternative Approaches**

If you don't want to use Lodash, you can achieve similar results using native JavaScript functions. For example:

* Use `Array.prototype.forEach()` for a simple iterative approach (like `_.each`)
* Use `Array.prototype.map()` to create a new array with the results of the iteration (like `_.map`)

However, keep in mind that these native functions may not provide the same level of convenience and functionality as the corresponding Lodash functions.

Related benchmarks:

lodash each & lodash map (version: 0)

Comparing performance of: lodash each vs lodash map

Created: 6 years ago by: Guest

Jump to the latest result

lodash each

lodash map

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.1:latest, generated one year ago):