Benchmark: ывавыа - MeasureThat.net

Script Preparation code:

class UniqueArray {
    constructor() {
        this._map = new Map();
        this._array = [];
    }
    updatedIndicesMap(from) {
        for (let i = from; i < this._array.length; i++) {
            let item = this._array[i];
            this._map.set(item, i);
        }
    }
    has(item) {
        return this._map.has(item);
    }
    add(item) {
        let result;
        if (this._map.has(item)) {
            result = false;
        }
        else {
            this._array.push(item);
            this._map.set(item, this._array.length - 1);
            result = true;
        }
        return result;
    }
    insert(item, index) {
        let updateFrom = this._array.length + 1;
        let removeResult = this.removeInternal(item);
        if (removeResult.result) {
            updateFrom = removeResult.index;
        }
        this._array.splice(index, 0, item);
        updateFrom = Math.min(index, updateFrom);
        this.updatedIndicesMap(updateFrom);
    }
    remove(item) {
        let removeResult = this.removeInternal(item);
        if (removeResult.result) {
            this.updatedIndicesMap(removeResult.index);
        }
        return removeResult.result;
    }
    removeInternal(item) {
        let index = this._map.get(item);
        if (index !== undefined) {
            this._array.splice(index, 1);
            this._map.delete(item);
            UniqueArray._removeResult.index = index;
            UniqueArray._removeResult.result = true;
        }
        else {
            UniqueArray._removeResult.index = 0;
            UniqueArray._removeResult.result = false;
        }
        return UniqueArray._removeResult;
    }
    clear() {
        this._map.clear();
        this._array.length = 0;
    }
    indexOf(item) {
        let index = this._map.get(item);
        return index === undefined ? -1 : index;
    }
    forEach(cb) {
        this._array.forEach(cb);
    }
    some(cb) {
        return this._array.some(cb);
    }
    clone() {
        let result = new UniqueArray();
        result._array = this._array.slice(0);
        result._map = new Map(this._map);
        return result;
    }
}
UniqueArray._removeResult = { index: 0, result: false };

var arr = []
var uarr = new UniqueArray()

Tests:

1
for (var i = 0; i < 10000; i++) { if (arr.indexOf(i) === -1) { arr.push(i) } }
2
for (var i = 0; i < 10000; i++) { uarr.add(i) }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
1
2

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 for the MeasureThat.net JavaScript benchmark.

**Benchmark Definition:**
The benchmark definition is represented by two JSON objects, each containing a `Benchmark Definition` string and a `Test Name`. The first test case uses an array (`arr`) to push elements if they don't exist in the array, while the second test case uses a custom class (`UniqueArray`) with various methods for adding, removing, and updating elements.

**Options compared:**

In this benchmark, two options are being compared:

1. **Manual array pushing**: The first test case uses an array to push elements if they don't exist in the array.
2. **Custom UniqueArray class**: The second test case uses a custom class (`UniqueArray`) with various methods for adding, removing, and updating elements.

**Pros and Cons of each approach:**

1. **Manual array pushing**:
	* Pros:
		+ Simple and straightforward implementation
		+ Easy to understand and maintain
		+ No additional dependencies or library usage required
	* Cons:
		+ Performance might suffer due to the overhead of repeatedly checking if an element exists in the array
		+ Not optimized for large datasets
2. **Custom UniqueArray class**:
	* Pros:
		+ Optimized for large datasets, as it uses a Map data structure for efficient lookups and updates
		+ Provides additional methods (e.g., `has`, `add`, `insert`, `remove`) that might be useful in certain scenarios
		+ Can help avoid repetitive code and improve maintainability
	* Cons:
		+ Requires creating a custom class, which can add complexity and overhead
		+ May require more setup and initialization time

**Library usage:**
The `UniqueArray` class uses a Map data structure (`this._map`) to keep track of element indices. The library used here is the built-in JavaScript `Map` object.

**Special JS feature or syntax:**
There are no notable special features or syntaxes used in this benchmark, such as async/await, Promises, or arrow functions.

**Other alternatives:**

In terms of optimizing array operations, other approaches could be considered:

1. **Using a Set data structure**: Instead of using an array and repeatedly checking for existence, you could use a Set to store unique elements.
2. **Using a more efficient data structure**: Depending on the specific requirements, alternative data structures like a Trie or a hash table might provide better performance for certain operations.

However, it's essential to note that these alternatives might not directly compare to the custom `UniqueArray` class provided in the benchmark, as they would require different implementation approaches.

Related benchmarks:

ывавыа (version: 0)

ываываыв

Comparing performance of: 1 vs 2

Created: 5 years ago by: Guest

Jump to the latest result

1

2

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):