<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.10/lodash.min.js'></script>
var l = new Set([1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7]);
return Array.from(l)
var l = [1, 2, 3, 4, 5, 6, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7];
return _.uniq(l);
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
Set | |
uniq |
Test name | Executions per second |
---|---|
Set | 3255496.0 Ops/sec |
uniq | 8145792.5 Ops/sec |
Let's break down the provided benchmark and explain what's being tested, compared, and analyzed.
Benchmark Overview
The provided benchmark compares two approaches to remove duplicates from an array:
Set
object ("Set"
test case)uniq()
function ("uniq"
test case)Comparison of Approaches
Using JavaScript's Set Object (Set)
Set
object is used to create a collection of unique values.Set
, duplicates are automatically ignored.Set
, the Array.from()
method is used to convert it back into an array, which contains only unique values.Using Lodash's uniq() Function (uniq)
uniq()
function from Lodash takes an array as input and returns a new array with duplicates removed.Pros and Cons
Pros:
Cons:
Array.from()
method is used to convert the set back into an array, which might incur additional overhead.Pros:
Cons:
Set
object due to the overhead of function calls and possible caching effects.Library: Lodash
Lodash is a popular JavaScript utility library that provides a wide range of functions for common programming tasks, such as data manipulation, string manipulation, and more. The uniq()
function is one of its many utilities that helps remove duplicates from arrays.
Special JS Feature/ Syntax: None mentioned
As there are no special features or syntaxes being used in this benchmark, we can focus on the comparison between the two approaches without delving into specific language features.
Other Alternatives
If you're looking for alternatives to Lodash's uniq()
function, some popular options include:
filter()
method with a callback function that checks for duplicates.Keep in mind that the choice of alternative will depend on your specific requirements and performance considerations.