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Array.prototype.concat vs spread operator xxx
(version: 0)
Compare the new ES6 spread operator with the traditional concat() method
Comparing performance of:
Array.prototype.concat vs spread operator
Created:
4 years ago
by:
Guest
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Tests:
Array.prototype.concat
var params = [ "hello", true, 7 ]; var other = [ 1, 2 ].concat(params);
spread operator
var params = [ "hello", true, 7 ] var other = [ 1, 2, ...params ]
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Suite status:
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Test case name
Result
Array.prototype.concat
spread operator
Fastest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down what's being tested in this benchmark. **Benchmark Goal** The goal of the benchmark is to compare the performance of two approaches for concatenating arrays: the traditional `Array.prototype.concat()` method and the new ES6 spread operator (`...`). **Options Compared** 1. **Traditional `concat()` method**: This method creates a new array by copying the elements from one or more source arrays. 2. **Spread Operator (`...`)**: This operator allows you to expand an iterable (like an array) into separate arguments. **Pros and Cons** * **Traditional `concat()` method**: + Pros: widely supported, well-documented, and easy to understand. + Cons: creates a new array, which can lead to memory allocation overhead. * **Spread Operator (`...`)**: + Pros: concise, efficient, and avoids the need for explicit array creation. + Cons: not all browsers support it (yet!), and its syntax might be unfamiliar to some developers. **Library/Function Used** In this benchmark, we don't see any specific libraries or functions being used. However, if you look at the individual test cases, you'll notice that they use the `concat()` method and the spread operator with an array literal (`[1, 2]`). No special JavaScript features or syntax are used in this benchmark. **Alternatives** If you wanted to compare these two approaches using a different method, here are some alternatives: * Use a built-in function like `Array.prototype.push()`, which can be compared to the spread operator. * Compare the performance of other array concatenation methods, such as `Array.prototype.splice()` or `Array.prototype.assign()`. Keep in mind that this benchmark specifically compares two common approaches for concatenating arrays, so the alternative approaches mentioned above might not be directly relevant.
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