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For vs Map 2
(version: 0)
Comparing performance of:
Push vs Join
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var strs = Array.from(new Array(10000)).map(() => 'String concat. ') var result;
Tests:
Push
result = new Array(strs.length); for (let i = 0; i < strs.length; i++) { result[i] = strs[i]; }
Join
result = strs.map((a) => a)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Push
Join
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 provided benchmark and explain what's being tested. **Benchmark Definition** The benchmark is defined in JSON format, which contains several important details: * `Name`: The name of the benchmark, "For vs Map 2". * `Description`: An empty string, indicating that no detailed description is available. * `Script Preparation Code`: A JavaScript snippet that creates an array of 10,000 strings using `Array.from` and `map`. The resulting array is stored in the `strs` variable. Additionally, a second assignment statement assigns the result of the map function to the `result` variable. * `Html Preparation Code`: An empty string, indicating that no HTML preparation code is required. **Individual Test Cases** The benchmark consists of two test cases: 1. **Push**: This test case uses the "Push" JavaScript method, which appends elements to an array using the `push()` method. The script preparation code creates a large array and assigns it to the `strs` variable. 2. **Join**: This test case uses the "Join" JavaScript method, which concatenates elements in an array using the `join()` method. In this case, the map function is used to create a new array with concatenated strings. **Options Compared** The benchmark compares two approaches: * **For Loop (Push)**: The `push()` method is used to append each string from the `strs` array to the end of another array. * **Array.prototype.join() (Join)**: The `join()` method is used to concatenate all strings in the `strs` array into a single string. **Pros and Cons** Here's a brief analysis of the pros and cons for each approach: * **For Loop (Push)** + Pros: - Can be more efficient for small arrays, as it avoids creating intermediate strings. - Allows for direct manipulation of the resulting array. + Cons: - Can lead to performance issues with large arrays due to repeated string concatenation. - Requires explicit looping over the elements. * **Array.prototype.join() (Join)** + Pros: - More concise and readable, as it uses a built-in method. - Avoids unnecessary intermediate strings creation. + Cons: - May be slower than `push()` for very large arrays due to the overhead of concatenation. - Requires the use of an empty string (`''`) as the separator. **Library and Special JS Feature** In this benchmark, there is no explicit library used beyond the standard JavaScript built-in methods (e.g., `Array.prototype.push()`, `Array.prototype.join()`). There are no special JS features or syntaxes being tested in this specific benchmark.
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Push vs Apply/Map
Push (forEach) vs Map
For const of vs Map
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