Benchmark: IndexOf array vs find object2

Script Preparation code:

var PLANETKEY = [
    'Sun',
    'Moon',
    'Mercury',
    'Venus',
    'Mars',
    'Jupiter',
    'Saturn',
    'Uranus',
    'Neptune'
];

var PLANETMAP = {
    i0: 'Sun',
    i1: 'Moon',
    i2: 'Mercury',
    i3: 'Venus',
    i4: 'Mars',
    i5: 'Jupiter',
    i6: 'Saturn',
    i7: 'Uranus',
    i8: 'Neptune'
};

Tests:

Array
PLANETKEY.indexOf('Neptune');
Object
Object.keys(PLANETMAP).find(k=>PLANETMAP[k]==='Neptune');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array
Object

Fastest: N/A

Slowest: N/A

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

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I'll break down the provided benchmarking scenario, explaining what's being tested, comparing different approaches, and discussing pros and cons.

**Benchmark Definition**

The benchmark is designed to compare two ways of searching for a specific value in an array and an object:

1. **Array search**: `PLANETKEY.indexOf('Neptune')`
2. **Object search**: `Object.keys(PLANETMAP).find(k=>PLANETMAP[k]==='Neptune')`

**Approaches Compared**

The benchmark is comparing the execution speed of these two approaches:

*   **Array search (`indexOf()` method)**: This method returns the index of the specified value in the array. If the value is not found, it returns `-1`.
*   **Object search (`Object.keys()` and `find()` methods combined)**: This approach first gets an array of keys from the object using `Object.keys()`, and then uses the `find()` method to iterate over this array to find the key that corresponds to the value `'Neptune'`.

**Pros and Cons**

*   **Array search (`indexOf()` method)`:
    *   Pros:
        *   Faster execution time for small arrays.
        *   More straightforward to implement, as it's a simple lookup operation.
    *   Cons:
        *   Returns `-1` if the value is not found, which might be considered an error in some cases.
        *   Does not support more complex array operations.
*   **Object search (`Object.keys()` and `find()` methods combined)`:
    *   Pros:
        *   More flexible than the `indexOf()` method, as it can handle arrays with non-integer keys or values.
        *   Supports more complex object operations.
    *   Cons:
        *   Slower execution time compared to the `indexOf()` method for large arrays (due to the overhead of creating an array of keys and iterating over it).
        *   More complex implementation, as it involves multiple method calls.

**Library Used**

The benchmark uses the following JavaScript libraries or features:

*   No specific library is mentioned in the benchmark definition, but it does use some built-in JavaScript methods like `indexOf()` for arrays and `Object.keys()` and `find()` for objects.
*   The `PLANETKEY` and `PLANETMAP` variables are assigned using template literals (`\r\n...`, etc.), which is a feature introduced in ECMAScript 2015 (ES6).

**Special JS Features or Syntax**

There are no special JavaScript features or syntax used in the benchmark. It only uses standard built-in methods and variable assignments.

**Alternative Approaches**

If you want to explore alternative approaches, here are some possibilities:

*   **Using `Array.prototype.findIndex()`**: Instead of using `indexOf()`, you could use the `findIndex()` method, which returns the index of the first element that satisfies the provided testing function.
*   **Using a custom iteration loop**: For the object search approach, you could write a custom iteration loop to find the key that corresponds to the value `'Neptune'`.
*   **Comparing with other data structures**: You could also compare these approaches with searching in sets or maps.

Keep in mind that benchmarking JavaScript code can be complex due to various factors like browser and platform variability, so consider using tools like `Benchmark.js` or `jsperf.com` to run your benchmarks accurately.

Related benchmarks:

IndexOf array vs find object2 (version: 0)

Comparing performance of: Array vs Object

Created: 3 years ago by: Guest

Jump to the latest result

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):