Benchmark: testestets 2 - MeasureThat.net

Script Preparation code:

var map = new Map();
var n = 1000000;
var obj = {};
for (let i = 0; i < n; i++) {
  map.set(i, i);
  obj[i] = i;

}

Tests:

map
const values = Array.from(map.values());
obj
const values = Object.values(obj);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
map
obj

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):

LLMs can make mistakes. Check important info.

**Overview of the Benchmark**

The provided JSON represents a JavaScript microbenchmark on MeasureThat.net. The benchmark consists of two test cases: one for using a Map object and another for using an Object object.

**Options Compared**

In this benchmark, two approaches are compared:

1. **Map Object**: Using a Map object to store key-value pairs.
2. **Object Object**: Using an Object object to store key-value pairs.

Both options are used in the same way: creating an empty Map or Object, setting `n` number of key-value pairs using a loop, and then retrieving all values from the map or object using `Array.from()` for Map or `Object.values()` for Object.

**Pros and Cons of Each Approach**

1. **Map Object**
	* Pros:
		+ Efficient retrieval of values (O(1) on average).
		+ Can handle large amounts of data.
	* Cons:
		+ Less intuitive to use than Objects.
		+ May require additional library or polyfill for older browsers.
2. **Object Object**
	* Pros:
		+ More intuitive to use than Maps.
		+ Wide browser support (no additional libraries required).
	* Cons:
		+ Retrieval of values can be slower (O(n) in some cases).
		+ May not perform well with large amounts of data.

**Library Used**

In this benchmark, the `Array.from()` function is used to retrieve all values from both Map and Object objects. This function is a part of the modern JavaScript standard library and is widely supported by browsers.

**Special JS Feature or Syntax**

None mentioned in this specific benchmark, but it's worth noting that the use of `Array.from()` and `Object.values()` is a relatively recent addition to the JavaScript language and may require support for ECMAScript 2019 (ES10) or later.

**Other Alternatives**

If you need to retrieve values from an object without using `Object.values()`, other alternatives include:

* Using a library like Lodash, which provides a `values()` function.
* Creating your own implementation of `Object.values()` using a loop and indexing into the object's prototype chain.
* Using a different data structure, such as an array or a Set.

Keep in mind that these alternatives may have different performance characteristics and trade-offs compared to using `Array.from()` or `Object.values()`.

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/105.0.0.0 Safari/537.36

Browser/OS: Chrome 105 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
map	140.9 Ops/sec
obj	197.9 Ops/sec

Related benchmarks:

testestets 2 (version: 0)

Comparing performance of: map vs obj

Created: 2 years ago by: Guest

Jump to the latest result

map

obj

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

Autogenerated LLM Summary (model llama3.2:3b, generated 25 days ago):