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sdfasdfasdf
(version: 0)
Comparing performance of:
asdasd vs sadgfasdgasdg
Created:
5 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 collection = [1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, 1, 2, 3, 4, ]
Tests:
asdasd
_.mapValues(collection, () => "a")
sadgfasdgasdg
Object.keys(collection).reduce( (acc, item) => ({ ...acc, [item]: "a", }), {} )
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
asdasd
sadgfasdgasdg
Fastest:
N/A
Slowest:
N/A
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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 this benchmark. **Overview** The provided JSON represents two individual test cases, each defining a JavaScript microbenchmark. The benchmarks are designed to measure the performance of different approaches for transforming a given input collection. **Test Case 1: `_mapValues(collection, () => "a")`** This test case uses the Lodash library's `mapValues` function. The function takes an input collection and returns a new collection where each value is transformed to the string "a". * **Library:** Lodash (`lodash@4.17.15/lodash.min.js`) * Purpose: A popular JavaScript utility library that provides functional programming helpers, including `mapValues`. * **Approach:** The `_mapValues` function iterates over each key-value pair in the input collection, creates a new value by applying the provided callback function (`() => "a"`), and returns the resulting collection. * **Pros:** * Concise and readable code * Lodash provides an efficient implementation of `mapValues` * **Cons:** * May incur overhead due to the use of a library function **Test Case 2: `Object.keys(collection).reduce((acc, item) => ({...acc, [item]: "a"}), {})`** This test case uses native JavaScript features to create a new object where each key is taken from the input collection and has a value of "a". * **Approach:** The code iterates over each key in the input collection using `Object.keys`, then applies the provided reduce function, which accumulates an object with key-value pairs. * **Pros:** * No library dependencies * Native JavaScript implementation can be optimized for performance * **Cons:** * Code can become complex and harder to read due to nested objects and callback functions **Comparison** Both approaches have their trade-offs in terms of performance, readability, and dependency on external libraries. The Lodash-based approach is more concise but may incur overhead due to the use of a library function, while the native JavaScript implementation is more lightweight but can be more complex to read. **Other Alternatives** For transforming collections in JavaScript, other approaches could include: 1. **Using `forEach`**: This method iterates over each element in the collection and applies a provided callback function. 2. **Using `for...of` loop**: This approach uses a traditional for loop with an iterator to iterate over each value in the collection. 3. **Using third-party libraries like Ramda or Loom**: These libraries provide alternative implementations of functional programming helpers, such as `mapValues`. 4. **Implementing custom mapping functions using closures**: This approach allows developers to define their own mapping functions and can be optimized for specific use cases. When choosing an approach, consider factors like performance requirements, code readability, and dependency on external libraries when designing your JavaScript microbenchmarks.
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