Toggle navigation
MeasureThat.net
Create a benchmark
Tools
Feedback
FAQ
Register
Log In
Lodash Flatten v.s. concat111242
(version: 0)
Comparing performance of:
Lodash Flatten vs concat vs flat
Created:
3 years ago
by:
Guest
Jump to the latest result
HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script>
Script Preparation code:
let ary = [1, [2, [3]]]
Tests:
Lodash Flatten
let ary = [1, [2, [3]]] return _.flatten(ary)
concat
let ary = [1, [2, [3]]] return [].concat(...ary)
flat
let ary = [1, [2, [3]]] return ary.flat();
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
Fork
Test case name
Result
Lodash Flatten
concat
flat
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):
Let's break down the provided benchmark definition and test cases. **Benchmark Definition:** The benchmark is designed to compare three approaches for flattening an array with nested arrays: 1. `_.flatten(ary)` from Lodash library 2. `[] .concat(...ary)` (spread operator) 3. `ary.flat()` (array method) **Options Compared:** The benchmark compares the performance of these three approaches: * **Lodash Flatten**: uses the `_` alias for Lodash's utility functions, specifically `flatten()` * **Concat**: uses the spread operator (`...`) to concatenate arrays * **Flat**: uses the `flat()` array method **Pros and Cons:** 1. **Lodash Flatten**: * Pros: concise and readable code, handles nested arrays recursively * Cons: relies on an external library (Lodash), may introduce additional overhead due to the library's presence 2. **Concat**: * Pros: simple, efficient, and well-supported by most browsers * Cons: verbose code, can be error-prone if not used correctly 3. **Flat**: * Pros: concise and readable code, native to modern JavaScript engines * Cons: may not work as expected in older browsers or environments **Other Considerations:** * The benchmark assumes that the input array `ary` has a specific structure: `[1, [2, [3]]]`. This is a common use case for flattening arrays with nested arrays. * The Lodash library is used for the `flatten()` function. It's a popular utility library that provides many useful functions for working with arrays and objects. **Special JS Features or Syntax:** None of the benchmark test cases rely on special JavaScript features or syntax beyond what's standard in modern JavaScript engines. However, it's worth noting that some versions of older browsers might not support the spread operator (`...`) or the `flat()` array method. Now, let's briefly discuss other alternatives: * **Manual iteration**: instead of using an external library or built-in methods, you could write a custom loop to flatten the array. This would be a more low-level approach but still feasible for simple use cases. * **Other flattening libraries**: if you prefer not to rely on Lodash or the spread operator, you might consider alternative flattening libraries like `Array.prototype.flat.call()` (supported in most modern browsers) or third-party libraries like `array-flatten`. Overall, the benchmark provides a useful comparison of three common approaches for flattening arrays with nested arrays.
Related benchmarks:
Lodash _concat vs native concat
Lodash flatten v.s. Spread
Lodash Flatten v.s. concat111
.flat vs _.flatten
Comments
Confirm delete:
Do you really want to delete benchmark?