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forEach vs map
(version: 0)
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Comparing performance of:
forEach vs map
Created:
9 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
a=["1610/08150155H", "1609/06183106V", "1610/08150155H", "1609/06183106V"]; function rufen(element, index, array) { let e=element; void 0; }
Tests:
forEach
a.forEach(rufen);
map
a.map(rufen);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
forEach
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 dive into the explanation of the provided benchmark. **Benchmark Definition** The benchmark is designed to compare the performance of two JavaScript methods: `forEach` and `map`. The benchmark uses an array `a` with four elements, each containing a string in the format "X/Y". **Script Preparation Code** The script preparation code defines a function `rufen(element, index, array)` that takes three arguments: * `element`: the current element being processed * `index`: the index of the current element in the array * `array`: the original array being iterated over This function is used as the callback function for both `forEach` and `map`. **Html Preparation Code** The HTML preparation code is empty, which means that the benchmark does not require any HTML setup or interaction. **Options Compared** The two options being compared are: 1. **`forEach`**: The `forEach` method iterates over the array using a callback function. In this case, it's used with the `rufen` function. 2. **`map`**: The `map` method creates a new array by applying a transformation function to each element in the original array. It also uses the `rufen` function as its transformation. **Pros and Cons** Both methods have their advantages and disadvantages: * **`forEach`**: * Pros: Simple and straightforward, easy to understand. * Cons: Can be less efficient than `map` for large datasets since it creates side effects (e.g., modifying the original array) during each iteration. * **`map`**: * Pros: More efficient for large datasets because it avoids side effects by creating a new array. * Cons: May require more complex setup and understanding of transformation functions. **Library** None **Special JS Feature or Syntax** There are no special JavaScript features or syntax used in this benchmark. It's a straightforward comparison of two built-in methods. **Other Considerations** When interpreting the benchmark results, it's essential to consider factors such as: * The size and complexity of the dataset being processed. * The specific use case for each method (e.g., is `forEach` more suitable when you need to modify the original array, or is `map` better suited when you just need a new array). * The JavaScript engine and browser used in the benchmark. **Alternatives** Other methods that could be compared in this benchmark include: * `for...of`: A newer way of iterating over arrays that's similar to `forEach`, but can be more efficient for large datasets. * Custom loops: Writing a custom loop using a traditional `for`-based approach, which might offer better performance depending on the specific use case. However, the provided benchmark focuses specifically on comparing `forEach` and `map`, so it's not necessary to explore alternative methods in this context.
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