Benchmark: map vs array lol

Tests:

dd
const dd = new Map(); dd.put("DD", true); dd.put("BB", true); dd.put("GG", true); dd.put("FF", true); dd.put("HH", true); dd.put("II", true); dd.has("FF");
aa
const a = ["DD", "BB", "GG", "FF", "HH", "II"]; a.includes("FF");

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
dd
aa

Fastest: N/A

Slowest: N/A

Latest run results:

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Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):

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Let's break down the provided JSON benchmark definitions and explain what's being tested, compared, and their pros and cons.

The two test cases are:

**Test Case 1: `map vs array lol`**

* **Benchmark Definition**: The script creates an empty Map (`dd`) and inserts several key-value pairs into it.
```javascript
const dd = new Map();
dd.put("DD", true);
dd.put("BB", true);
dd.put("GG", true);
dd.put("FF", true);
dd.put("HH", true);
dd.put("II", true);

dd.has("FF");
```
* **What's being tested**: The performance difference between using a `Map` and an array (`a`) to store the same data.

**Test Case 2: `aa`**

* **Benchmark Definition**: An array (`a`) is created with some string values, and then the `includes()` method is called on it.
```javascript
const a = ["DD", "BB", "GG", "FF", "HH", "II"];

a.includes("FF");
```
* **What's being tested**: The performance of the `includes()` method on an array.

**Library: None**

Neither test case uses any external libraries or frameworks.

**Special JavaScript Feature/Syntax:**

In Test Case 1, the `Map` data structure is used, which is a built-in JavaScript object. However, it's worth noting that modern browsers have supported the `Map` API since ES6 (EcmaScript 2015).

**Other Alternatives**

If you wanted to test this benchmark on an array instead of a Map, you could simply use an object like this:
```javascript
const dd = {};

dd["DD"] = true;
dd["BB"] = true;
dd["GG"] = true;
dd["FF"] = true;
dd["HH"] = true;
dd["II"] = true;

dd["FF"];
```
If you wanted to test the performance of the `includes()` method on an array in a different browser or environment, you could use a testing framework like Jest or Mocha.

**Pros and Cons**

* Using a `Map` vs. an array:

* **Pros**:
    + Maps are more efficient for large datasets because they use a hash table internally, which allows for faster lookups.
    + Maps can handle duplicate keys without throwing errors.
  + **Cons**:
    - Some older browsers may not support the `Map` API.
    + Arrays are more widely supported and have better performance in some cases (e.g., when using `indexOf()` or other methods that require a linear search).
* Using an array vs. another data structure:

* **Pros**:
    - Arrays are more widely supported and have better performance in most browsers.
    - They can be easily converted to other data structures like `Map` or `Set`.
  + **Cons**:
    - As mentioned earlier, arrays may not be as efficient for large datasets.

Overall, the choice between using a `Map` and an array depends on your specific use case and performance requirements.

Related benchmarks:

map vs array lol (version: 0)

dd

Comparing performance of: dd vs aa

Created: 5 years ago by: Guest

Jump to the latest result

dd

aa

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

No previous run results

Autogenerated LLM Summary (model llama3.2:3b, generated one year ago):