Benchmark: Object key access vs array find - #2

Tests:

Object access
const object = {a:1, b:2, c:3} const result = [] for (let i = 0; i < 1000*1000; i++) { result.push(object.c) }
Array find
const array = [1, 2, 3] const result2 = [] for (let i = 0; i < 1000*1000; i++) { result2.push(array[1]) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Object access
Array find

Fastest: N/A

Slowest: N/A

Latest run results:

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

LLMs can make mistakes. Check important info.

Let's break down the provided JSON data and explain what is tested, compared, and some pros and cons of each approach.

**What is being tested?**

The benchmark is comparing two approaches to find an object or array element:

1. **Object key access**: This involves accessing an element in an object using its key (e.g., `object.c`).
2. **Array find**: This involves finding an element in an array using its index (e.g., `array[1]`).

**Options compared**

The two options are being compared:

* **Object key access**: Using the `object` variable with its properties to access elements.
* **Array find**: Using arrays and indexing (`array[1]`) to access elements.

**Pros and cons of each approach**

* **Object key access**:
	+ Pros:
		- Typically faster than array indexing for small datasets.
		- Can be more readable and maintainable, especially when working with complex data structures.
	+ Cons:
		- May perform slower for large datasets due to hash table lookups.
		- Can be less efficient in JavaScript engines that optimize array indexing (like V8 in Chrome).
* **Array find**:
	+ Pros:
		- Typically faster than object key access for large datasets, as arrays are optimized for random access.
		- Less dependent on the specific data structure and its properties.
	+ Cons:
		- May be less readable and maintainable, especially when working with complex data structures.

**Library usage**

There doesn't appear to be any explicit library usage in these benchmark cases. However, it's worth noting that some libraries might optimize or provide additional functionality for array indexing (e.g., `Array.prototype.indexOf()`).

**Special JS features or syntax**

There doesn't seem to be any special JavaScript features or syntax being used in these benchmark cases. The code is straightforward and follows standard JavaScript practices.

**Alternatives**

Other alternatives for finding an object or array element might include:

* Using the `in` operator (e.g., `object['c']`) instead of bracket notation (`object.c`).
* Utilizing `Object.keys()` and `Array.prototype.forEach()` to iterate over properties and elements.
* Leveraging modern JavaScript features like **optional chaining** (e.g., `object?.c`) or **template literals** (e.g., `${object.c}`).

Keep in mind that these alternatives might not be directly comparable to the original code, as they may introduce additional overhead or dependencies.

The provided benchmark data only compares two simple approaches: object key access and array find. Depending on the specific use case and requirements, other optimization techniques or libraries might be necessary for more complex scenarios.

Related benchmarks:

Object key access vs array find - #2 (version: 0)

Test speed of object access by key vs array find to find object

Comparing performance of: Object access vs Array find

Created: 3 years ago by: Guest

Jump to the latest result

Object access

Array find

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):