<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.4/lodash.min.js"></script>
window.foo = ['cat', 'dog', 'bird'];
window.bar = ['cat', 'dog', 'bird'];
_.isEqual(window.foo, window.bar)
window.foo.join() === window.bar.join()
--enable-precise-memory-info
flag.
Test case name | Result |
---|---|
_.isEqual | |
Array.join() |
Test name | Executions per second |
---|---|
_.isEqual | 1925259.1 Ops/sec |
Array.join() | 2486935.0 Ops/sec |
Let's break down the provided benchmark definition and test cases.
Overview
MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The goal of this benchmark is to compare the performance of two approaches: using Lodash's isEqual
function and using the Array.join()
method for equality comparison on a shallow array of strings.
Test Cases
There are two test cases:
This test case uses the _.isEqual
function from Lodash library to compare two arrays: window.foo
and window.bar
. The purpose of this library is to provide a set of functional programming helpers, including functions for comparing data.
The pros of using _.isEqual
are:
However, the cons are:
This test case uses the Array.join()
method to compare two arrays: window.foo
and window.bar
. The purpose of this approach is to use the built-in array method to concatenate elements into a string, and then compare the resulting strings for equality.
The pros of using Array.join()
are:
isEqual
function.However, the cons are:
===
operator for equality comparison, which might not be immediately apparent to all users.Other Considerations
When choosing between these two approaches, consider the following factors:
isEqual
function may provide a more readable and maintainable solution.Array.join()
method might be more efficient.isEqual
function can help keep your code concise and easy to understand.Alternatives
If you're looking for alternatives to these two approaches, consider the following options:
every()
, some()
, or indexOf()
. These methods might provide a more efficient alternative to Lodash's isEqual
function.In summary, MeasureThat.net provides a helpful benchmarking platform for comparing performance and readability of different approaches to equality comparison in JavaScript. By understanding the pros and cons of each method and considering alternative options, you can make informed decisions about which approach best suits your project's needs.