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Array spread operator vs Array.prototype.push
(version: 0)
Comparing performance of:
spread operator vs Array.prototype.push
Created:
3 years ago
by:
Guest
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Tests:
spread operator
var params = [ "hello", true, 7 ] var other = [ 1, 2 ] var together = [...other, ...params]
Array.prototype.push
var params = [ "hello", true, 7 ] var other = [ 1, 2 ] var together = other.push(...params)
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Test case name
Result
spread operator
Array.prototype.push
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N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and explain what's being tested, compared, and considered. **Benchmark Overview** The benchmark compares two approaches to concatenate arrays: using the spread operator (`...`) and `Array.prototype.push()`. **Options Compared** Two options are being compared: 1. **Spread Operator (`...`)**: This method uses the spread operator to concatenate arrays. It's a concise way to create a new array by spreading elements from one or more arrays. 2. **`Array.prototype.push()`**: This method uses the `push()` method of an array to add elements and then returns the updated array length. **Pros and Cons** * **Spread Operator (`...`)**: + Pros: concise, efficient, and easy to read. + Cons: not all browsers support it (older versions might use a polyfill). * **`Array.prototype.push()`**: + Pros: widely supported by older browsers, as it uses the `push()` method which is part of the ECMAScript specification. + Cons: slightly less concise and more verbose than using the spread operator. **Library/Function Usage** In this benchmark, no libraries or functions are explicitly mentioned. However, if we consider polyfills or library usage for the spread operator, it's worth noting that some older browsers might use a polyfill to support it. The `Array.prototype.push()` method is part of the ECMAScript specification and doesn't require any additional libraries. **Special JS Features/Syntax** The benchmark uses JavaScript features that are widely supported: * Spread operator (`...`) * `Array.prototype.push()` These features are part of modern JavaScript and are generally considered stable. **Other Alternatives** In theory, other alternatives could be used to concatenate arrays, such as: * Using a loop to iterate over the elements and add them to the target array * Creating a new array using the `concat()` method (although this is deprecated in favor of spread operator or `Array.prototype.push()`) However, these alternatives are generally less efficient and more verbose than using the spread operator or `Array.prototype.push()`.
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