Benchmark: Array vs Set vs Object for removing value

Script Preparation code:

var master = Array(100).fill(null).map((a, b) => b);
var a = [...master];
var s = new Set(master);
var o = [];
master.forEach(x => { o[x] = x })

Tests:

Set
master.forEach(x => s.delete(x));
Array
master.forEach(x => a.splice(a.indexOf(x), 1));
Object
master.forEach(x => delete o[x]);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Set
Array
Object

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

The provided JSON represents a JavaScript microbenchmark test case on MeasureThat.net. The benchmark tests the performance of three different data structures - Arrays, Sets, and Objects - when removing a value from them.

**Options being compared:**

1. **Arrays**: Using `splice()` method to remove a value.
2. **Sets**: Using `delete` keyword to remove a value (Note: Sets in JavaScript do not have a built-in `remove()` method like some other programming languages, so this implementation uses the `delete` keyword to achieve similar behavior).
3. **Objects**: Using `delete` keyword to remove a property.

**Pros and Cons of each approach:**

1. **Arrays**:
	* Pros: Well-supported by most browsers and has a simple syntax.
	* Cons: Can be slow for large arrays, especially when searching for the value to be removed, as it requires linear search.
2. **Sets**:
	* Pros: Fast lookup and removal of values (O(1) time complexity).
	* Cons: Not all browsers support Sets natively; this test relies on a polyfill or specific browser implementation.
3. **Objects**:
	* Pros: Can be used to remove properties, but requires more code than the other two approaches.
	* Cons: Can be slower for large objects due to the overhead of accessing and manipulating properties.

**Library usage:**

None of the test cases use a library explicitly, but Sets rely on a polyfill or specific browser implementation. This is likely due to the fact that not all browsers support Sets natively.

**Special JavaScript features/syntax:**

This test does not mention any special JavaScript features or syntax that are specific to certain browsers or versions.

**Other alternatives:**

If using other data structures, you could also consider testing:

* Linked lists
* Hash tables (if available in the target environment)
* DOM elements (for browser-specific tests)

Keep in mind that these alternatives might not be suitable for all use cases and may require additional considerations for performance, compatibility, and maintenance.

It's worth noting that MeasureThat.net provides a framework to run multiple benchmark tests with different data structures and algorithms, making it easy to compare performance across various scenarios.

Related benchmarks:

Array vs Set vs Object for removing value (version: 0)

Comparing performance of: Set vs Array vs Object

Created: 5 years ago by: Registered User

Jump to the latest result

Set

Array

Object

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):