Benchmark: Array join vs string template v2

Script Preparation code:

var a = "Hello World"
var b = "Goodbye"
var c = "World"

Tests:

Array
const foo = [ a,b,c ].join(':')
template literal
const foo = `${a}:${b}${c}`

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Array
template literal

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 benchmark definition and explain what's being tested.

**What is being tested?**

The benchmark is comparing two approaches to concatenate strings: using an array (`Array join`) and using template literals (`template literal`).

**Options compared:**

1. **Array join**: This approach uses the `join()` method on an array of strings, concatenating them with a separator (in this case, a colon `:`).
2. **Template literal**: This approach uses template literals, which are a syntax feature introduced in ECMAScript 2015 (ES6). Template literals allow you to embed expressions inside string literals using backticks (`).

**Pros and Cons of each approach:**

1. **Array join**
	* Pros:
		+ Can be easily extended to concatenate more than two strings.
		+ Can be used with existing JavaScript libraries and frameworks that support `join()`.
	* Cons:
		+ Requires creating an array, which can have performance overhead for small inputs.
		+ May not be as readable or concise as template literals.
2. **Template literal**
	* Pros:
		+ More readable and concise than array join for simple concatenation scenarios.
		+ Can be used to embed expressions inside strings.
	* Cons:
		+ Limited flexibility compared to array join, especially for larger inputs.
		+ May require additional compilation or parsing steps in some environments.

**Library and special JS feature:**

Neither of the tested approaches uses a specific library. However, template literals are a new syntax feature introduced in ES6, which may have different behavior or optimizations in older browsers or environments.

**Benchmark preparation code:**

The script preparation code is creating three variables (`a`, `b`, and `c`) and assigning them string values. These variables are then used to create the benchmark inputs.

**Other alternatives:**

If you were to test other concatenation approaches, some alternatives could be:

1. **String concatenation using the `+` operator**: This is a simple but less readable approach that uses the `+` operator to concatenate strings.
2. **Using `Array.prototype.reduce()`**: This method can be used to concatenate an array of strings, but it's more verbose than array join and template literals.
3. **Using regular expressions**: Regular expressions can be used to concatenate strings using the `RegExp.prototype.exec()` method, but this approach is generally less readable and less efficient.

These alternatives would likely result in different benchmark results due to differences in performance, readability, and conciseness.

Related benchmarks:

Array join vs string template v2 (version: 0)

Comparing performance of: Array vs template literal

Created: 3 years ago by: Guest

Jump to the latest result

Array

template literal

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):