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Concat vs Slice f1
(version: 0)
Comparing performance of:
Array.prototype.slice vs Array.prototype.concat
Created:
4 years ago
by:
Guest
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Tests:
Array.prototype.slice
var other = [ 1, 2 ].slice();
Array.prototype.concat
var other = [1].concat([ 2 ]);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
Array.prototype.slice
Array.prototype.concat
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmarking process and analyze the provided JSON data. **Benchmark Definition**: The benchmark definition is used to specify the test case or script that will be executed by MeasureThat.net. In this case, there are two test cases: 1. `var other = [ 1, 2 ].slice();` - This code creates a new array containing the same elements as the original array `[ 1, 2 ]`, but does not modify it. 2. `var other = [1].concat([ 2 ]);` - This code concatenates two arrays: `[1]` and `[2]`. **Options Compared**: The benchmark is comparing two options: 1. Using the `slice()` method to create a new array. 2. Using the `concat()` method to concatenate two arrays. **Pros and Cons of Each Approach**: * **Slice Method (`slice()`)**: + Pros: More efficient, as it creates a new array without modifying the original one. + Cons: May not be as readable or intuitive for some developers. * **Concat Method (`concat()`)**: + Pros: More readable and intuitive, as it explicitly concatenates the two arrays. + Cons: Less efficient than using `slice()`, as it modifies the original array. **Library Usage**: There is no explicit library usage in these test cases. However, it's worth noting that both `slice()` and `concat()` methods are part of the JavaScript standard library. **Special JS Features or Syntax**: Neither of these test cases uses any special JavaScript features or syntax. **Other Alternatives**: * Instead of using `slice()`, you could use array destructuring to create a new array: `[...[ 1, 2 ]]`. * Alternatively, you could use the spread operator (`...`) to create a new array: `[...[ 1, 2 ]]`. In terms of alternatives for the benchmark, MeasureThat.net also offers other options, such as: * Running benchmarks on specific browsers or versions * Using different execution modes (e.g., single-threaded vs multi-threaded) * Measuring performance under different conditions (e.g., with and without caching) It's worth noting that MeasureThat.net is a crowdsourced benchmarking platform, which means that the results may vary depending on the users who contribute to the benchmark.
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