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test flatMap vs reduce
(version: 0)
Comparing performance of:
reduce vs flatMap
Created:
4 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var arr = Array(10_000).fill(0) var itemGenerator = (x) => [x, x]
Tests:
reduce
arr.reduce((acc, x) => [...acc, ...itemGenerator(x)], [])
flatMap
arr.flatMap(itemGenerator)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
reduce
flatMap
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 dive into the world of JavaScript microbenchmarks on MeasureThat.net. **What is being tested?** The provided JSON represents a benchmark that compares two approaches: `flatMap` and `reduce`. The test case uses an array of 10,000 elements, which are generated by an item generator function `itemGenerator`. The `flatMap` method is used to create a new array with the results of applying a given function to each element in the original array. In this case, the function simply duplicates the value of each element. On the other hand, the `reduce` method is used to reduce the array to a single value by applying a given function to each element, accumulating the results. Here, the function concatenates the result with `[x, x]`, effectively duplicating the original value. **Options compared** The two approaches are being compared in terms of performance and execution speed on different browsers. **Pros and Cons** * **flatMap:** * Pros: * More concise and readable code * Can be more efficient for large arrays, as it avoids unnecessary intermediate array creations * Cons: * May not be supported by older browsers or those with limited JavaScript engine capabilities * Can lead to performance issues if the generated array is too large * **reduce:** * Pros: * Widely supported across different browsers and JavaScript engines * More flexible, as it allows for more complex accumulation logic * Cons: * Typically requires more code and may be less readable than `flatMap` * Can lead to performance issues if the array is very large **Library** There is no explicit library mentioned in the provided JSON. However, some JavaScript libraries like Lodash provide implementations for both `flatMap` and `reduce` methods. **Special JS feature or syntax** The benchmark does not use any special JavaScript features or syntax, making it accessible to a wide range of software engineers regardless of their familiarity with advanced JavaScript concepts. **Alternatives** If you're looking for alternatives or additional benchmarks, MeasureThat.net offers a vast library of benchmarks covering various topics, including: * Performance and optimization * DOM manipulation and rendering * Security and sandboxing * Networking and HTTP * Storage and caching You can search for specific benchmarks by keyword or browse through the available options to find something that suits your interests.
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