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Pushy VS Mappy
(version: 0)
Benchmark.js
Comparing performance of:
Push vs Map
Created:
5 years ago
by:
Guest
Go to the latest result
Script Preparation code:
var strs = Array.from(new Array(10000)).map(() => 'String concat. ') var result = []
Tests:
Push
for (let i = 0; i < strs.length; i++) { result.push(strs[i]) }
Map
result = strs.map((a) => a)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
Fork
Test case name
Result
Push
Map
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
one year ago
)
User agent:
Mozilla/5.0 (X11; Linux x86_64; rv:142.0) Gecko/20100101 Firefox/142.0
Browser/OS:
Firefox 142 on Linux
View result in a separate tab
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Embed Benchmark Result
<iframe src="https://measurethat.net/Embed?id=616084" width="100%" height="500px"></iframe>
Map
8K/s
Push
2K/s
View exact numbers
Test name
Executions per second
✓
Map
7,874 Ops/sec
Push
1,734 Ops/sec
Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'll break down the provided benchmark definition and test cases to explain what's being tested, compared, and their pros and cons. **Benchmark Definition:** The benchmark measures the performance of two JavaScript operations: `push` and `map`. The script preparation code creates an array of 10,000 strings, where each string is a concatenation of "String concat. ". The resulting array is then used to test both `push` and `map` operations. **Options Compared:** 1. **Push:** This operation iterates through the `strs` array and adds each element to the `result` array one by one. 2. **Map:** This operation applies a transformation function to each element of the `strs` array, returning a new array with the transformed elements. **Pros and Cons:** * **Push:** + Pros: - Simple and easy to understand. - No additional memory allocation is required, as it only pushes elements onto the existing stack. + Cons: - May be slower due to the overhead of pushing elements one by one. - Can lead to higher memory usage if the input array is large. * **Map:** + Pros: - Often faster than `push` since it uses a more efficient data structure (a single allocation for the new array). - Reduces memory allocation overhead. + Cons: - Requires additional memory allocation, which can lead to higher memory usage. - May be less intuitive for developers who are not familiar with functional programming. **Library Usage:** There is no explicit library mentioned in the benchmark definition. However, it's worth noting that the `Array.from()` method and the arrow function syntax (`(a) => a`) are part of modern JavaScript standards (ES6+). **Special JS Features/Syntax:** The benchmark uses arrow functions (`(a) => a`), which is a feature introduced in ES6. It also uses the spread operator (`...`), which is used to create an array from an iterable. **Other Alternatives:** * Other approaches for iterating over arrays and transforming elements include: + `forEach()` method + `for` loop with an index variable + Using a library like Lodash, which provides a `mapValues()` function Keep in mind that the choice of approach depends on the specific use case, performance requirements, and personal preference.
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