Benchmark: concat string vs array push

Script Preparation code:

var arr = [];
var mxname = 'mxname';

Tests:

concat string
'test string' + ' ' + mxname;
array push
arr.push(mxname);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
concat string
array push

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

This benchmark does not have any results yet. Be the first one to run it!

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmark and explain what's being tested.

**Benchmark Definition**

The benchmark is comparing two approaches:

1. Concatenating strings using the `+` operator (`'test string' + ' ' + mxname;`)
2. Pushing a value onto an array using the `arr.push()` method (`arr.push(mxname);`)

**Options being compared:**

* Using the `+` operator to concatenate strings
* Using the `push()` method to add values to an array

**Pros and Cons of each approach:**

1. Concatenating strings:
	* Pros: Simple, intuitive, and widely supported.
	* Cons: Can lead to performance issues due to string creation and concatenation overhead. String interning (reusing the same string object) can help mitigate this.
2. Using `push()` to add values to an array:
	* Pros: Efficient way to add elements to an array, especially when working with large datasets. Does not create intermediate strings like concatenation does.
	* Cons: Can be slower than concatenation for small datasets due to the overhead of creating a new array element.

**Library and special JavaScript features used:**

The benchmark uses `var` declaration and assignment (`var arr = [];`, `var mxname = 'mxname';`). There are no external libraries or special JavaScript features beyond this basic syntax.

**Other considerations:**

* The benchmark assumes that the string values being concatenated and array elements being pushed are of equal size. This may not be representative of real-world scenarios where strings may vary in length.
* The benchmark does not account for edge cases like null, undefined, or NaN (Not a Number) inputs, which could affect performance.

**Alternatives:**

Other approaches to concatenate strings or add values to an array include:

* Using template literals (``${test string} ${mxname}`;`)
* Using `String.prototype.concat()` method
* Using `Array.prototype.push.apply()` method for adding multiple elements to an array

Keep in mind that these alternatives may have different performance characteristics and trade-offs, depending on the specific use case.

In summary, the benchmark is designed to compare the relative efficiency of concatenating strings using the `+` operator versus pushing values onto an array using the `push()` method.

Related benchmarks:

concat string vs array push (version: 0)

Comparing performance of: concat string vs array push

Created: 9 years ago by: Guest

Jump to the latest result

concat string

array push

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):