Benchmark: string to ~~ vs parseInt vs Number

Script Preparation code:

var strA = "420343343242";
var strB = "420343343243";

Tests:

notnot
var res = ~~strA > ~~strB;
parseInt
var res = parseInt(strA) > parseInt(strB);
Number
var res = Number(strA) > Number(strB);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
notnot
parseInt
Number

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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I'll break down the benchmark and explain what's being tested, the options compared, pros and cons of each approach, and other considerations.

**Benchmark Overview**

The benchmark is comparing three different ways to compare two numbers: `~~`, `parseInt`, and `Number`. The test cases are:

1. `notnot`: Compares the result of `~~` (two-tilda operator) on the strings `strA` and `strB`.
2. `parseInt`: Compares the result of `parseInt(strA)` and `parseInt(strB)`.
3. `Number`: Compares the result of `Number(strA)` and `Number(strB)`.

**Options Compared**

The options being compared are:

* `~~` (two-tilda operator): A JavaScript operator that returns the integer part of a number, or the last character if the input is a string.
* `parseInt(strA)`: A function that converts a string to an integer.
* `Number(strA)`: A function that converts a string to a number.

**Pros and Cons**

1. **~~ (Two-Tilda Operator)**:
	* Pros: Lightweight, fast, and easy to understand.
	* Cons: Can be misleading if not used carefully, as it returns the last character of a string instead of performing a typical integer comparison.
2. `parseInt(strA)`:
	* Pros: Reliable and well-documented function for converting strings to integers.
	* Cons: May throw an error if the input string is not a valid integer, or return NaN (Not a Number) if the input is "NaN".
3. `Number(strA)`:
	* Pros: Converts strings to numbers without the need for explicit parsing, making it easy to use with functions like Math operations.
	* Cons: May not work as expected if the input string contains non-numeric characters.

**Library Used**

None explicitly mentioned in this benchmark.

**Special JS Feature or Syntax**

The two-tilda operator (`~~`) is a special JavaScript operator that's not widely used. It was introduced in ECMAScript 2015 (ES6) and can be useful in specific situations, but it's not commonly used for integer comparisons.

**Other Considerations**

When choosing between these options, consider the following factors:

* Performance: `~~` is likely to be the fastest option due to its lightweight nature.
* Readability: `parseInt` and `Number` are more readable and intuitive than the two-tilda operator.
* Error handling: Be aware that `parseInt` can throw errors if the input string is not a valid integer, while `Number` will return NaN in such cases.

**Alternatives**

Other alternatives for comparing numbers include:

* Using a comparison function with a custom implementation
* Utilizing bitwise operators (e.g., `<<`, `>>`) to perform integer comparisons
* Leveraging built-in JavaScript functions like `Math.max` or `Math.min`

Related benchmarks:

string to ~~ vs parseInt vs Number (version: 0)

Comparing performance of: notnot vs parseInt vs Number

Created: 2 years ago by: Guest

Jump to the latest result

notnot

parseInt

Number

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):