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intersection arr test
(version: 0)
test
Comparing performance of:
t1 vs t2
Created:
6 years ago
by:
Guest
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HTML Preparation code:
<script src="https://cdn.jsdelivr.net/npm/lodash@4.17.15/lodash.min.js"></script>
Script Preparation code:
var array = [[1,2,3,4],[3,4,5,6],[7,8,3,4]];
Tests:
t1
array[0].filter(item => array.slice(1).every(temp => temp.includes(item)));
t2
_.intersection(...array);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
t1
t2
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's dive into the explanation of what is tested on the provided JSON that represents the benchmark. **Benchmark Overview** The benchmark measures the performance of two different approaches for finding the intersection of arrays in JavaScript. The test cases are designed to compare the execution speed of these approaches, which will help identify the most efficient way to achieve this task. **Approach 1: Using Array.prototype.filter() and every() methods (Test Case "t1")** This approach uses the `filter()` method to create a new array containing only the elements that pass the test implemented by the provided function. The `every()` method is then used to check if all elements in the filtered array satisfy the condition. **Pros:** * Easy to implement and understand * Works with any JavaScript engine * Allows for flexible filtering logic **Cons:** * May have higher overhead due to the creation of a new array and multiple iterations over the original array * Can be slower than native methods if the filter logic is complex or has many iterations **Approach 2: Using Lodash's _.intersection() function (Test Case "t2")** This approach uses the `_.intersection()` function from Lodash, a popular utility library for JavaScript. This function takes multiple arrays as arguments and returns an array containing only the elements that are common to all input arrays. **Pros:** * Provides a well-tested and optimized implementation of the intersection logic * Can be faster than Approach 1 due to its native implementation **Cons:** * Requires Lodash library to be included in the test environment * May not work with all JavaScript engines or environments that don't support Lodash **Library Used:** Lodash is a popular utility library for JavaScript that provides a collection of functions for various tasks, including array manipulation. **Other Considerations:** * The benchmark assumes that the input arrays are dense and contain only numbers. If the arrays can be sparse or contain non-numeric values, additional processing may be required. * The benchmark measures the execution speed of the test cases without considering other factors like memory usage or garbage collection pauses. These aspects should be considered in a real-world scenario. **Alternatives:** If you want to explore alternative approaches for finding array intersections, here are some options: 1. **Native JavaScript implementation:** You can implement your own intersection logic using native JavaScript methods and functions, such as `reduce()`, `forEach()`, and `Set` objects. 2. **Other libraries or frameworks:** Depending on the specific requirements of your project, you may want to explore other libraries or frameworks that provide optimized array manipulation functionality, such as Array.prototype.reduce() or modern array polyfills. Keep in mind that each alternative approach has its own trade-offs and considerations, which are not covered here. It's essential to evaluate the performance, ease of implementation, and compatibility requirements for your specific use case before choosing an approach.
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