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Set to Array vs. lodash uniq
(version: 0)
Comparing performance of:
Set -> Array vs Lodash uniq
Created:
one year ago
by:
Guest
Go to the latest result
HTML Preparation code:
<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>
Tests:
Set -> Array
var l = new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]); var ll = Array.from(l); return ll;
Lodash uniq
var l = [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]; return _.uniq(l);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Set -> Array
Lodash uniq
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/128.0.0.0 Safari/537.36
Browser/OS:
Chrome 128 on Mac OS X 10.15.7
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=553035" width="100%" height="500px"></iframe>
Lodash uniq
11.7M/s
Set -> Array
4.8M/s
View exact numbers
Test name
Executions per second
✓
Lodash uniq
11,669,711 Ops/sec
Set -> Array
4,848,081 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the world of JavaScript microbenchmarks on MeasureThat.net. **Benchmark Definition and Test Cases** The benchmark definition is a JSON object that provides metadata about the test case, including its name, description, script preparation code, and HTML preparation code. In this case, we have two test cases: 1. "Set -> Array": This test case creates a new Set object with 14 identical elements (7 times) and then converts it to an array using `Array.from()`. 2. "Lodash uniq": This test case uses the Lodash library to remove duplicates from an array. **Options Compared** The two options being compared are: 1. **Converting a Set to an Array**: Using `Set` object to store unique elements and then converting it to an array using `Array.from()`. 2. **Using Lodash uniq function**: Using the `uniq()` function from the Lodash library to remove duplicates from an array. **Pros and Cons of Each Approach** 1. **Converting a Set to an Array**: * Pros: Sets are designed for fast membership testing, so this approach can be faster for small sets. * Cons: Converting a set to an array requires additional memory allocation and can be slower for large sets. 2. **Using Lodash uniq function**: * Pros: Lodash provides optimized implementation for removing duplicates, which can be faster than implementing it manually. * Cons: Requires an external library (Lodash) to be loaded, which may add overhead. **Library and Its Purpose** The `lodash` library is a popular JavaScript utility library that provides various functions for tasks like array manipulation, string manipulation, and more. In this case, the `uniq()` function is used to remove duplicates from an array. **Special JS Feature or Syntax** There doesn't appear to be any special JavaScript features or syntax being used in these test cases. **Other Considerations** * **Memory Allocation**: Both approaches require memory allocation for the set and array, respectively. * **Performance**: The performance of both approaches can depend on factors like the size of the input data, the number of unique elements, and the efficiency of the `Array.from()` method. **Alternatives** If you want to explore alternative approaches or libraries, here are a few options: 1. Use `Array.prototype.filter()` instead of Lodash `uniq()`. 2. Implement your own duplicate removal function using JavaScript. 3. Try using other array manipulation functions like `Array.prototype.slice()` or `Array.prototype.concat()`. 4. Explore other libraries like `underscore` (which is similar to Lodash) or `fastest` (a performance-focused library). By considering these factors and alternatives, you can gain a deeper understanding of the trade-offs involved in choosing an approach for duplicate removal in JavaScript.
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