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lodash map vs es6 map (10000 times)
(version: 1)
Comparing performance of:
lodash map vs es6 map
Created:
5 years ago
by:
Registered User
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HTML Preparation code:
<script src='https://cdn.jsdelivr.net/npm/lodash@4.17.19/lodash.min.js'></script>
Script Preparation code:
function double(n) { return n*2; } var data = [...Array(10000)].map((v, idx) => idx);
Tests:
lodash map
_.map(data, double);
es6 map
data.map(double);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
lodash map
es6 map
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested, compared, and their pros/cons. **Benchmark Overview** The benchmark is designed to compare the performance of two approaches: Lodash's `map` function and the native JavaScript `map` function (introduced in ECMAScript 2015, also known as ES6). **Script Preparation Code** The script preparation code creates an array `data` with 10,000 elements, each indexed by its position in the array. The `double` function multiplies its input by 2. **Library: Lodash** Lodash is a popular JavaScript utility library that provides various functions for tasks like array manipulation, string manipulation, and more. In this case, it's being used to implement the `map` function. The `map` function in Lodash iterates over an array and applies a given function to each element, returning a new array with the results. **Native JavaScript `map` Function (ES6)** The native JavaScript `map` function is implemented using the ECMAScript 2015 syntax. It's designed to be more efficient and concise than its Lodash counterpart. **Comparison** Two individual test cases are run: 1. **Lodash Map**: The script calls the `map` function on the `data` array, passing the `double` function as an argument. 2. **ES6 Map**: The script calls the `map` function directly on the `data` array, without any additional arguments. **Pros and Cons** Here's a brief summary of each approach: * **Lodash Map**: + Pros: More readable code, easier to understand for those familiar with Lodash. + Cons: May incur a performance overhead due to the additional function call and potential caching issues. * **ES6 Map**: + Pros: Native implementation, potentially faster execution due to optimizations by the browser or interpreter. + Cons: Less readable code, may require additional setup or understanding of ECMAScript syntax. **Other Considerations** It's worth noting that the Lodash `map` function might be affected by caching mechanisms in JavaScript engines. If the same map function is called multiple times with the same input, it may return cached results instead of recalculating them. This could potentially skew the benchmark results. Additionally, some browsers or environments might have different optimizations or implementations for the native `map` function, which could affect the results. **Latest Benchmark Results** The latest benchmark results show that: * The Lodash `map` function performed better in this specific test case, with an average of 53477.91015625 executions per second. * The ES6 `map` function was slower, with an average of 7490.849609375 executions per second. Keep in mind that these results might not be representative of all use cases or environments.
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