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Add new array to array: push vs destructuring
(version: 0)
Comparing performance of:
spread operator vs Push
Created:
4 years ago
by:
Guest
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Tests:
spread operator
var params = [ "hello", true, 7 ]; var add = ['new', 'add', 'this']; var other = [ ...params, ...add ];
Push
var params = [ "hello", true, 7 ]; var add = ['new', 'add', 'this']; params.push(...add);
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Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
spread operator
Push
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 the benchmark and its results. **Benchmark Overview** The provided JSON represents a JavaScript microbenchmark that tests two different approaches for adding elements to an array: the spread operator (`...`) and the `push()` method. **Options Compared** The benchmark compares the performance of two options: 1. **Spread Operator (`...`)**: This approach uses the spread operator to create a new array by copying the elements from the original array (`params`) and adding the elements from the `add` array. 2. **Push Method**: This approach uses the `push()` method to add one or more elements to the end of an array. **Pros and Cons** * **Spread Operator (`...`)**: + Pros: concise and expressive syntax, can be faster for large arrays due to the optimized implementation in modern JavaScript engines. + Cons: may have higher overhead for small arrays, and can lead to confusing code if not used carefully. * **Push Method**: + Pros: widely supported and well-established, can be more efficient for small arrays. + Cons: less concise syntax, and may not be as readable. **Library Usage** There is no library usage in this benchmark. The test cases only rely on built-in JavaScript features. **Special JS Feature or Syntax** The spread operator (`...`) is a new JavaScript feature introduced in ECMAScript 2015 (ES6). It allows you to create a new array by copying elements from an existing array and adding more elements. **Other Considerations** * The benchmark only measures the performance of these two approaches for adding elements to an array. Other factors, such as memory allocation or garbage collection, may also affect performance. * The test cases use arrays with a small number of elements (three), which might not be representative of real-world scenarios where arrays can have many more elements. **Alternatives** If you want to benchmark other approaches for adding elements to an array, you could consider: 1. Using `concat()` method instead of the spread operator. 2. Comparing the performance of using a library like Lodash or Ramda for array operations. 3. Benchmarking different approaches for appending elements to an array, such as using `push()`, `unshift()`, or `splice()`. Keep in mind that these alternatives may require modifications to the benchmark code and test cases.
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