Benchmark: Time Difference Formatting

Script Preparation code:

var z = 3661;
var t;

Tests:

If and modulo array
var y = []; if (z>3600){ y.push(Math.floor(z/3600)); } z%=3600; if (z>60){ y.push(Math.floor(z/60)); } z%=60; if (z>0){ y.push(Math.floor(z)); } t = y.join(":").replace(/\b(\d)\b/g,"0$1");
Ternary and slice concatenation
t = ("0"+Math.floor(z/3600).toString()).slice(-2)+":"+("0"+Math.floor(z%3600/60).toString()).slice(-2)+":"+("0"+Math.floor(z%3600%60).toString()).slice(-2)

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
If and modulo array
Ternary and slice concatenation

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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Let's break down the provided JSON data for MeasureThat.net, a website used to create and run JavaScript microbenchmarks.

**Benchmark Definition**

The benchmark is designed to compare two approaches for formatting large numbers:

1. A heavily modulo-based if chain: This approach uses multiple `if` statements with conditional modulo operations to extract the last digit of the number.
2. A one-line ternary solution: This approach uses a single line of code with nested ternary operators to achieve the same result.

**Options Compared**

The two options being compared are:

1. **If and Modulo Array**: This approach uses an array to store the extracted digits and then joins them together using a custom replacement function.
2. **Ternary and Slice Concatenation**: This approach uses nested ternary operators to directly concatenate the extracted digits.

**Pros and Cons**

* **If and Modulo Array**:
	+ Pros: Can be more readable for complex formatting tasks, allows for easy modification of the format string.
	+ Cons: May have overhead due to array creation and manipulation, can be slower for large inputs.
* **Ternary and Slice Concatenation**:
	+ Pros: Can be faster and more concise, reduces memory allocation and copying.
	+ Cons: May be harder to read and maintain, especially for complex formatting tasks.

**Library/ Framework**

There is no explicit library or framework mentioned in the benchmark definition. However, it's likely that the `join()` method used in both approaches is part of the standard JavaScript API.

**Special JS Features/Syntax**

The benchmark uses the following special JavaScript features:

* **Array methods**: The `push()` and `join()` methods are used to manipulate arrays.
* **Ternary operators**: The nested ternary operators in the second approach are used to achieve a concise formatting solution.
* **Regular expressions**: The `slice()` method with a regular expression is used to remove unnecessary characters from the formatted string.

**Other Alternatives**

If you're looking for alternative approaches, here are a few options:

1. **String.prototype.replace()**: Instead of using a custom replacement function, you could use `String.prototype.replace()` to achieve the same result.
2. **Template literals**: You could use template literals (`${expression}`) to create a string with embedded expressions and formatting tokens.
3. **Intl.NumberFormat API**: The Intl.NumberFormat API provides a more robust way to format numbers with locale-specific options.

These alternatives might offer better performance or readability, depending on your specific use case.

Related benchmarks:

Time Difference Formatting (version: 3)

Determine the performance difference between a heavily modulo-based if chain and a one-line ternary solution.

Comparing performance of: If and modulo array vs Ternary and slice concatenation

Created: 9 years ago by: Registered User

Jump to the latest result

If and modulo array

Ternary and slice concatenation

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):