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test 111
(version: 0)
Comparing performance of:
underscore vs index of
Created:
5 years ago
by:
Guest
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HTML Preparation code:
<script src='https://cdnjs.cloudflare.com/ajax/libs/lodash.js/4.17.5/lodash.min.js'></script> <script src='https://cdnjs.cloudflare.com/ajax/libs/underscore.js/1.8.3/underscore-min.js'></script> <script src='https://cdnjs.cloudflare.com/ajax/libs/angular.js/1.6.5/angular.min.js'></script>
Script Preparation code:
var array = ['banana', 'sausage', 'jesus']
Tests:
underscore
_.some(array, x => x === "banana")
index of
array.indexOf('banana') !== 1
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
underscore
index of
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to explain what's being tested in the provided JSON benchmark. **Benchmark Overview** The benchmark measures the performance of two different JavaScript approaches: using the `indexOf` method on an array, and using the `_some` function from the Lodash library with a callback function. **Options Compared** There are two options being compared: 1. **Using `indexOf` method**: This approach uses the `indexOf` method to search for the value "banana" in the `array`. The `indexOf` method returns the index of the first occurrence of the specified value, or -1 if the value is not found. 2. **Using `_some` function with callback**: This approach uses the `_some` function from Lodash, which takes a predicate function (in this case, an anonymous function that checks if `x` equals "banana") and returns `true` if at least one element in the array passes the test. **Pros and Cons of Each Approach** 1. **Using `indexOf` method**: * Pros: Simple and straightforward approach, easy to understand. * Cons: May be slower than other approaches that can take advantage of modern JavaScript features or optimizations. 2. **Using `_some` function with callback**: * Pros: Can be faster than the `indexOf` method since it uses a more optimized implementation under the hood. * Cons: Requires an additional library (Lodash) and may be less intuitive for some developers. **Other Considerations** * The benchmark uses two different versions of JavaScript libraries: Lodash (version 4.17.5) and Underscore.js (version 1.8.3). Using a more modern version of these libraries might improve performance. * The benchmark is run on multiple executions per second, which can help to get an accurate measure of the performance difference between the two approaches. **Library Usage** * Lodash is used in the `_some` function with callback. Lodash is a popular utility library that provides functions for various tasks, such as array manipulation, string processing, and more. * Underscore.js is used in the `array.indexOf('banana') !== 1` benchmark. Underscore.js is another utility library that provides functions similar to Lodash. **Special JS Feature or Syntax** There are no special JavaScript features or syntax mentioned in the provided code snippet. However, it's worth noting that modern JavaScript engines often use optimizations such as just-in-time (JIT) compilation and cacheing of frequently executed code to improve performance.
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