Benchmark: string to number123

Tests:

plus sign
+"100"
Number func
Number('100')
parseInt
parseInt('100')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
plus sign
Number func
parseInt

Fastest: N/A

Slowest: N/A

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

LLMs can make mistakes. Check important info.

I'll do my best to explain the benchmark and its various aspects.

**Benchmark Overview**

MeasureThat.net is a website that allows users to create and run JavaScript microbenchmarks. The provided JSON represents a benchmark definition, which outlines the test case being measured.

The benchmark definition includes:

1. **Name**: A unique identifier for the benchmark.
2. **Description**: A brief description of what the benchmark measures (in this case, converting a string to a number).
3. **Script Preparation Code** and **Html Preparation Code**: These fields are typically used to set up any additional code or HTML needed for the benchmark. In this case, both are empty, indicating that no special setup is required.

The individual test cases are listed in an array:

1. **"Benchmark Definition"`: The actual JavaScript expression being measured (e.g., "+\"100\"", "Number('100')", or "parseInt('100')").
2. **"Test Name"`: A descriptive name for the test case, which helps identify the specific benchmark being measured.

**Options Compared**

The benchmark compares different approaches to convert a string to a number:

1. **Using the `+` operator**: This method concatenates the string with a plus sign (`+`) and then attempts to parse the result as an integer.
2. **Using the `Number()` function**: This method directly converts the string to a number using a built-in JavaScript function.
3. **Using the `parseInt()` function**: This method parses the string and returns an integer value, but only if the string can be successfully converted.

**Pros and Cons of Each Approach**

Here are some general pros and cons for each approach:

1. **`+` operator**:
	* Pros: Simple and easy to understand.
	* Cons: May lead to unexpected results due to implicit coercion or unexpected whitespace characters in the input string.
2. **`Number()` function**:
	* Pros: More reliable than the `+` operator, as it provides a more explicit conversion process.
	* Cons: Requires an additional method call, which may incur overhead.
3. **`parseInt()` function**:
	* Pros: Highly reliable, as it specifically targets string parsing and returns an integer value only if possible.
	* Cons: May not work correctly for certain input strings (e.g., non-numeric characters) or versions of JavaScript.

**Library Usage**

None of the provided benchmark definitions use external libraries. However, some benchmarks may include additional setup code that relies on libraries like jQuery or DOM manipulation frameworks.

**Special JS Features or Syntax**

The provided benchmark definitions do not explicitly mention any special JavaScript features or syntax. If a benchmark included such features, it would likely be indicated in the `Script Preparation Code` or `Html Preparation Code` fields.

**Alternatives**

Other approaches to convert strings to numbers might include:

1. **Using a regular expression**: This method can provide more flexibility and accuracy than simple concatenation or parsing.
2. **Using a third-party library**: Depending on the specific requirements, using an external library like Moment.js (for date parsing) or a custom implementation might be necessary.

I hope this explanation helps you understand the benchmark definition and its various aspects!

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.110 Safari/537.36

Browser/OS: Chrome 96 on Windows

View result in a separate tab

Test name	Executions per second
plus sign	1012529472.0 Ops/sec
Number func	8545500.0 Ops/sec
parseInt	8245163.0 Ops/sec

Related benchmarks:

string to number123 (version: 0)

convert string to number

Comparing performance of: plus sign vs Number func vs parseInt

Created: 2 years ago by: Guest

Jump to the latest result

plus sign

Number func

parseInt

Suite status: <idle, ready to run>

Experimental features:

Fastest: N/A

Slowest: N/A

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