Benchmark: remove els - MeasureThat.net

Script Preparation code:

function removeFromArraySolution(array, ...args) {
    const newArray = [];

    array.forEach((item) => {
        if (!args.includes(item)) {
            newArray.push(item);
        }
    });

    return newArray;
};

function removeFromArrayPersonal(originalArray, ...removeItemsArray) {
    for (let removeItem of removeItemsArray) {
        if (originalArray.indexOf(removeItem) == -1) {
            continue
        } else {
            originalArray.splice(originalArray.indexOf(removeItem), 1)
        }
    }

    return originalArray
};

Tests:

solution
removeFromArraySolution([1,2,3,4,5,6,7], 2, 5, 7)
personal
removeFromArrayPersonal([1,2,3,4,5,6,7], 2, 5, 7)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
solution
personal

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 dive into the explanation of the provided benchmark.

**Benchmark Overview**

The benchmark measures the performance of two JavaScript functions: `removeFromArraySolution` and `removeFromArrayPersonal`. Both functions aim to remove specific elements from an array, but they use different approaches.

**Options Compared**

The two options being compared are:

1. **removeFromArraySolution**: This function creates a new array with only the elements that are not present in the `args` array (a parameter).
2. **removeFromArrayPersonal**: This function iterates through the original array and removes the specified elements by using the `splice()` method.

**Pros and Cons**

* **removeFromArraySolution**:
	+ Pros: Creates a new array, which can be more efficient for large datasets since it avoids modifying the original array.
	+ Cons: Requires additional memory allocation and copying of data.
* **removeFromArrayPersonal**:
	+ Pros: Modifies the original array in-place, reducing memory usage.
	+ Cons: Iterating through the array can be slower for large datasets.

**Other Considerations**

Both functions have a time complexity of O(n), where n is the length of the array. However, `removeFromArrayPersonal` has an additional O(m) factor due to the `indexOf()` and `splice()` operations, which can lead to a higher constant factor.

**Library Usage**

None of the provided code uses external libraries. However, if we were to consider third-party libraries for similar tasks, some options include:

* Lodash's `differenceBy` function
* Ramda's `filter` function

If you needed to remove elements from an array while preserving other elements that meet certain conditions, these libraries could provide more efficient and concise solutions.

**Special JavaScript Features or Syntax**

There are no special JavaScript features or syntax mentioned in the benchmark. Both functions use standard JavaScript syntax.

Now, let's discuss some alternative approaches for similar benchmarks:

* **Using `filter()`**: Instead of creating a new array or modifying an existing one, you could use the `filter()` method to create a new array with only the desired elements.
* **Using `map()`**: If the goal is to create a new array with modified elements (e.g., removing duplicates), you could use the `map()` function in combination with other operations.
* **Using a data structure library like Set or Map**: If the benchmark involves fast lookups and removals, using a data structure like Set or Map could provide better performance.

Related benchmarks:

remove els (version: 0)

Comparing performance of: solution vs personal

Created: 3 years ago by: Guest

Jump to the latest result

solution

personal

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):