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Add new array to array: push vs destructuring
(version: 0)
Comparing performance of:
spread operator vs Push
Created:
2 years ago
by:
Guest
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Tests:
spread operator
var params = [ "hello", true, 7 ] var toto = ['new'] var other = [ ...params, ...toto ]
Push
var params = [ "hello", true, 7 ]; var toto = ['new'] params.push(...toto);
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Suite status:
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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 provided benchmark and its options. **Benchmark Overview** The MeasureThat.net benchmark compares two approaches for adding elements to an array: using the spread operator (`...`) and using the `push()` method with multiple arguments. **Options Compared** There are only two options being compared: 1. **Spread Operator (`...`)**: This approach uses the spread operator to add elements to an existing array. 2. **Push Method with Multiple Arguments**: This approach uses the `push()` method to add one or more elements to an existing array. **Pros and Cons of Each Approach** **Spread Operator (`...`)** Pros: * More readable code * Less chance of errors due to typos or incorrect argument counts * Efficient for adding a small number of elements Cons: * Requires JavaScript version 3.8 or later (introduced in ECMAScript 2018) * Can be slower than `push()` method for large arrays (due to the overhead of creating new arrays) **Push Method with Multiple Arguments** Pros: * Faster than spread operator for large arrays * Works with older JavaScript versions Cons: * More error-prone due to typos or incorrect argument counts * Less readable code **Other Considerations** In modern JavaScript, using the spread operator is generally considered a better practice than using `push()` method with multiple arguments. However, in older JavaScript versions, `push()` method might be the only viable option. **Library Used** None of the benchmark test cases use any external libraries. **Special JS Feature or Syntax** The benchmark uses the new spread operator syntax introduced in ECMAScript 2018 (ES7), which allows adding elements to an array using the `...` syntax. This is a modern JavaScript feature that is not widely supported by older browsers or environments. **Alternative Approaches** Other approaches for adding elements to an array include: * Using `concat()` method: `var other = params.concat(toto);` * Using `Array.prototype.reduce()` method: `var other = params.reduce((acc, val) => acc.concat(val), toto)` * Using a loop with `push()`: `for (var i = 0; i < toto.length; i++) { params.push(toto[i]); }` These alternatives are not tested in this benchmark.
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