Benchmark: Number to string 2021-08-05

Tests:

Number plus string
2.44 + ''
String constructor
String(2.44)
ToString function
(2.44).toString()
Template Literal
`${2.44}`

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Number plus string
String constructor
ToString function
Template Literal

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.

**Overview of the Benchmark**

The provided JSON represents a JavaScript microbenchmark test case named "Number to string 2021-08-05". This benchmark tests different ways of converting a number to a string in JavaScript.

**Benchmark Definition**

The benchmark definition is not explicitly stated, but based on the script preparation code and individual test cases, it appears that the benchmark is testing the performance of three different methods:

1. **String concatenation**: Using the `+` operator to concatenate a number with an empty string (`''`).
2. **String constructor**: Using the `String()` function to create a new string object from a numeric value.
3. **Template literals**: Using template literals (``${expression}``) to insert a value into a string.

**Comparison of Options**

The three options being compared are:

1. **Number plus string ( concatenation )**: This method is simple and widely supported, but may have performance implications due to the overhead of creating an empty string.
	* Pros: Wide support, easy to implement.
	* Cons: May be slower than other methods.
2. **String constructor**: This method creates a new string object from a numeric value, which can be more efficient than concatenation.
	* Pros: Can be faster than concatenation due to the avoidance of string creation overhead.
	* Cons: Requires explicit function call, may not be as widely supported.
3. **Template literals**: This method is a relatively modern feature that allows for expressive string interpolation.
	* Pros: More readable and maintainable than traditional concatenation or string constructor methods.
	* Cons: May have performance implications due to the complexity of the template literal syntax.

**Library Usage**

The benchmark does not explicitly use any libraries, but it does rely on the `String()` function, which is a built-in JavaScript method.

**Special JS Features/Syntax**

The benchmark uses **template literals**, which are a relatively recent feature introduced in ECMAScript 2015 (ES6). Template literals provide a more expressive way of inserting values into strings, making code more readable and maintainable. The use of template literals is a key aspect of the benchmark.

**Other Alternatives**

If template literals were not an option, other alternatives for string interpolation might include:

1. **String.prototype.replace()**: Using the `replace()` method with a template-like syntax.
2. **Function calls**: Creating a function that takes a numeric value and returns a formatted string.
3. **String formatting libraries**: Using external libraries like Moment.js or Underscore.js to format strings.

However, these alternatives may not be as efficient or readable as template literals.

**Benchmark Results**

The latest benchmark results show that:

1. **Template literals** have the highest execution frequency (98.88%).
2. **String constructor** has a lower execution frequency (0.81%) but is faster than concatenation.
3. **Number plus string (concatenation)** has the lowest execution frequency (0.31%).

These results suggest that template literals are likely to be the fastest method for converting numbers to strings in JavaScript.

Related benchmarks:

Number to string 2021-08-05 (version: 0)

Comparing performance of: Number plus string vs String constructor vs ToString function vs Template Literal

Created: 4 years ago by: Guest

Jump to the latest result

Number plus string

String constructor

ToString function

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):