Benchmark: safagqegegqgqgqehqh

Tests:

1
const arr = [] for(let i = 0; i < 10000000; i++){ arr['asgsagfafas'] = i }
2
const arr = {} for(let i = 0; i < 10000000; i++){ arr['asgsagfafas'] = 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):

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**What is being tested?**

The provided JSON represents two JavaScript microbenchmarks that test how quickly an array can be populated with 10 million elements using different methods. The benchmarks are:

1. `const arr = []\r\n  for(let i = 0; i < 10000000; i++){\r\n    arr['asgsagfafas'] = i\r\n  }` - This benchmark creates an empty array and then uses a `for` loop to push elements into it using bracket notation (`arr['asgsagfafas'] = i`).
2. `const arr = {}\r\n  for(let i = 0; i < 10000000; i++){\r\n    arr['asgsagfafas'] = i\r\n  }` - This benchmark creates an empty object (`{}`) and then uses a `for` loop to set properties on it using bracket notation (`arr['asgsagfafas'] = i`).

**Options compared**

In the first benchmark, the only option being tested is the use of an empty array (`const arr = []`) versus no array at all.

In the second benchmark, two options are being compared:

* `const arr = {}` - This creates a new empty object.
* No object literal (`{}`) - This simply creates a primitive value `null`.

**Pros and Cons**

**Empty Array (Benchmark 1)**

Pros:

* The array is created immediately, which can reduce memory allocation overhead.
* Bracket notation is often faster than other methods of accessing properties.

Cons:

* If the array is not fully populated, it may cause issues with garbage collection or other performance-related problems.

**No Object Literal (Benchmark 2)**

Pros:

* This option avoids creating an object literal, which can reduce memory allocation and object creation overhead.
* Bracket notation is still used, so the benefits of fast access remain.

Cons:

* The `null` value may cause issues with some browsers or libraries that rely on objects.
* The performance difference between this option and using an empty array is likely to be small.

**Considerations**

When choosing between these options, consider the following factors:

* Memory allocation overhead: If memory allocation is a significant concern, using an `empty array` might provide a slight performance boost.
* Browser support: Using `null` as a temporary value may cause issues with some browsers or libraries that expect objects.

**Library usage**

The provided benchmarks do not use any specific JavaScript libraries. However, it's worth noting that the use of bracket notation (`arr['asgsagfafas'] = i`) is a common pattern in JavaScript, and many libraries or frameworks may optimize this syntax.

**Special JS features or syntax**

There are no special JavaScript features or syntax used in these benchmarks. The code follows standard JavaScript syntax and semantics.

**Alternative approaches**

Other alternatives for populating an array or object with 10 million elements might include:

* Using `Array.prototype.fill()` to populate the entire array at once
* Using `Object.assign()` to populate the object properties in bulk
* Using a library like `lodash` that provides optimized array and object manipulation functions

Keep in mind that these alternatives may have different performance characteristics, browser support, or usage patterns compared to the original benchmarks.

Related benchmarks:

safagqegegqgqgqehqh (version: 0)

112

Comparing performance of: 1 vs 2

Created: 4 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):