Benchmark: Implicit vs Explicit convertion

Script Preparation code:

var n = 1;
var res;

Tests:

Implicit conversion
res = n + "";
Explicit conversion
res = String(n);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Implicit conversion
Explicit conversion

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: one year ago)

User agent: Mozilla/5.0 (X11; Linux x86_64; rv:131.0) Gecko/20100101 Firefox/131.0

Browser/OS: Firefox 131 on Linux

View result in a separate tab

Test name	Executions per second
Implicit conversion	912642048.0 Ops/sec
Explicit conversion	911240640.0 Ops/sec

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

LLMs can make mistakes. Check important info.

Let's break down the benchmark and its results to understand what is being tested.

**Benchmark Description**

The benchmark measures the performance difference between implicit and explicit string conversions in JavaScript. Implicit conversion occurs when JavaScript automatically converts a value (in this case, an integer `n`) into a string without explicitly specifying it using a function like `String()`. Explicit conversion, on the other hand, requires using the `String()` function to convert a value into a string.

**Options Compared**

Two options are being compared:

1. **Implicit Conversion**: JavaScript automatically converts `n` into a string.
2. **Explicit Conversion**: The `String()` function is used to explicitly convert `n` into a string.

**Pros and Cons of Each Approach**

*   Implicit Conversion:
    *   Pros: Faster execution time since it's a simple operation, and it can be more readable in some cases.
    *   Cons: May lead to unexpected behavior or errors if the conversion fails (e.g., trying to concatenate a number with a string).
*   Explicit Conversion:
    *   Pros: More predictable and controlled, reduces the risk of errors or unexpected behavior. However, it may be slower due to the overhead of calling the `String()` function.
    *   Cons: May make code more verbose, but can improve maintainability and readability.

**Library Used**

None are explicitly mentioned in this benchmark.

**Special JS Feature/Syntax**

The benchmark uses implicit string conversion by assigning a string value directly after an integer variable (`res = n + "";`). This is a common pattern in JavaScript where the `+` operator is used to concatenate strings. The explicit conversion uses the `String()` function, which is also a standard part of the JavaScript language.

**Other Alternatives**

If you wanted to compare other string conversion methods or approaches, some alternatives could include:

*   Using template literals (`res = `${n}`;`)
*   Utilizing the `toString()` method on an object (e.g., `res = n.toString();`)
*   Comparing different string concatenation methods (e.g., using the dot notation vs. the comma notation)

Keep in mind that these alternatives might affect the results and should be considered when planning a benchmark like this.

Now that we've gone through the benchmark, you can see how the Implicit vs Explicit conversion benchmark is testing the performance difference between two common string conversion methods in JavaScript.

Related benchmarks:

Implicit vs Explicit convertion (version: 0)

Comparing performance of: Implicit conversion vs Explicit conversion

Created: 8 years ago by: Guest

Jump to the latest result

Implicit conversion

Explicit conversion

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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