Benchmark: wdefvbgg3r2 - MeasureThat.net

Script Preparation code:

var a = '1344656666';

Tests:

parse
parseInt(a, 10)
tilde
~~a

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
parse
tilde

Fastest: N/A

Slowest: N/A

Latest run results:

No previous run results

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

LLMs can make mistakes. Check important info.

Let's break down the provided benchmarking test cases.

**Benchmark Definition and Preparation Code**

The benchmark definition is represented by two JSON objects: one for the overall benchmark and another for each individual test case. The overall benchmark has three key properties:

*   **Name**: A unique identifier for the benchmark, which in this case is "wdefvbgg3r2".
*   **Description**: A brief description of the benchmark, which in this case is just a tilde.
*   **Script Preparation Code**: A JavaScript snippet that initializes the variables used in the benchmark. In this case, it sets up a variable `a` with the value `'1344656666'`.

The individual test cases have two properties each:

*   **Benchmark Definition**: The specific operation to be measured in the benchmark. There are two test cases: one for `parseInt(a, 10)` and another for `~~a`.
*   **Test Name**: A descriptive name for each test case.

**Options Compared**

The two options being compared in these benchmarks are:

1.  `parseInt(a, 10)`
2.  `~~a` (also known as the bitwise NOT operator)

These operations are used to perform arithmetic and logical comparisons on the value of `a`.

**Pros and Cons of Different Approaches**

Let's look at the pros and cons of each approach:

*   **parseInt(a, 10)**:
    *   Pros: This function is widely supported by most JavaScript engines and browsers. It provides a clear way to convert a string representation of an integer to its actual numeric value.
    *   Cons: Parsing strings can be computationally expensive for large values or when dealing with non-numeric input.

*   **~~a** (bitwise NOT):
    *   Pros: This operator is relatively fast and simple to implement. It's also a more straightforward way to negate the value of `a` without using explicit comparison or casting.
    *   Cons: Not all JavaScript engines support this operator, so its performance can vary across different browsers. Additionally, it may not be as clear or maintainable for complex operations.

**Library and Special JS Feature**

In these benchmarks, there is no apparent library being used, but we do see the use of the bitwise NOT operator `~~a`. This operator is a special JavaScript feature that provides a way to perform a bit-wise NOT operation on a value. It's supported by most modern JavaScript engines but may not work in older versions.

**Alternatives**

If you're looking for alternative approaches or libraries, consider the following:

*   For parsing strings, you can use `Number()` or the `atob` function (for base64 encoding).
*   For more complex arithmetic operations, you might want to explore using a library like MathJS or using the `Big.js` library for arbitrary-precision arithmetic.

In summary, these benchmarks are measuring the performance of two different ways to negate or parse a value. The choice between `parseInt(a, 10)` and `~~a` depends on your specific use case and the level of compatibility required with different JavaScript engines and browsers.

Related benchmarks:

wdefvbgg3r2 (version: 0)

tilde

Comparing performance of: parse vs tilde

Created: 5 years ago by: Guest

Jump to the latest result

parse