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Js custom Filter test
(version: 0)
Comparing performance of:
Filter default vs Filter Boolean
Created:
8 years ago
by:
Guest
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Tests:
Filter default
let value = [true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true]; let result = value.filter(v => v);
Filter Boolean
let value = [true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true,false,true]; let result = value.filter(Boolean);
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Suite status:
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Run tests (2)
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Test case name
Result
Filter default
Filter Boolean
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.1:latest
, generated one year ago):
Let's dive into the details of this benchmark. **What is being tested?** The benchmark tests two different approaches to filtering an array in JavaScript: using the `filter()` method with a callback function, and using the `filter()` method with the `Boolean` value as its argument. **Test case 1: "Filter default"** In this test case, the `filter()` method is used with a callback function that takes each element `v` of the array `value` and returns `true` if `v` is truthy (i.e., not equal to `false`, `0`, an empty string, etc.). The resulting filtered array is stored in the variable `result`. **Test case 2: "Filter Boolean"** In this test case, the `filter()` method is used with the `Boolean` value as its argument. This means that every element in the array `value` will be considered truthy if it's not equal to `false`, and the resulting filtered array will contain all elements that pass this truthiness check. **What options are compared?** The two test cases compare two different approaches to filtering an array: 1. Using a callback function (`v => v`) with the `filter()` method. 2. Passing the `Boolean` value as an argument to the `filter()` method. **Pros and cons of each approach:** 1. **Callback function**: This approach is more explicit and easier to understand, especially for complex filtering logic. However, it requires more code and can be slower due to the overhead of calling a function for each element. 2. **Boolean value**: This approach is concise and fast, but may not be as readable or maintainable for complex filtering logic. **Other considerations:** * Both approaches will produce the same result (a filtered array containing all truthy elements) if used correctly. * The `filter()` method returns a new array, so it won't modify the original array. * This benchmark doesn't test any library-specific functionality; the JavaScript built-in `filter()` method is used in both cases. **Library and special JS feature:** No libraries or special JavaScript features are used in this benchmark. It relies on the standard JavaScript `filter()` method, which is available in all modern browsers and Node.js environments. **Alternatives:** While not tested in this specific benchmark, other alternatives for filtering an array include: * Using a loop to iterate over the array and push truthy elements to a new array. * Using a library like Lodash or Underscore.js, which provide various filtering functions (e.g., `_.filter()`) that can be used instead of the standard JavaScript `filter()` method. Keep in mind that these alternatives may have their own performance characteristics, so it's essential to consider them in the context of your specific use case.
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