Benchmark: Comparison different type of checking string values

Script Preparation code:

var Status = {};
Status['PENDING'] = 'pending';
Status['IN_PROGRESS'] = 'in_progress';
Status['FAILED'] = 'failed';
Status['DONE'] = 'done';

var st = 'done';

var regexp = new RegExp(`${Status.A}|${Status.B}`, 'i');
var set1 = new Set([Status.A,Status.B]);
var set = new Set([Status.A,Status.B]);

Tests:

Using logical operators
if ( st === Status['PENDING'] || st === Status['IN_PROGRESS']) { return true }
Using RexExp
if ( regexp.test(st) ) { return true }
Using set of values
if ( set.has(st) ) { return true }

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
Using logical operators
Using RexExp
Using set of values

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.

The provided JSON represents a JavaScript microbenchmark that compares the performance of three different approaches to check if a string value matches a certain condition.

**Overview**

The benchmark tests three test cases:

1. **Using logical operators**: This approach uses the `||` operator to check if the input string `st` is equal to either of the values in the `Status` object (`'PENDING'` or `'IN_PROGRESS'`).
2. **Using regular expressions (RexExp)**: This approach creates a new regular expression with the values from the `Status` object as part of its pattern, and then uses the `test()` method to check if the input string matches this pattern.
3. **Using sets**: This approach creates a Set object containing the values from the `Status` object, and then checks if the input string is present in this set using the `has()` method.

**Comparison of approaches**

Here's a brief overview of each approach, including their pros and cons:

1. **Using logical operators**
	* Pros:
		+ Simple and easy to understand
		+ Fast execution
	* Cons:
		+ May not work correctly if the input string is null or undefined
		+ May be slower than other approaches for very large strings
2. **Using regular expressions (RexExp)**
	* Pros:
		+ Can handle complex patterns and matching
		+ Fast execution
	* Cons:
		+ May be slower than other approaches for simple matching cases
		+ May have security implications if not used carefully
3. **Using sets**
	* Pros:
		+ Fast execution
		+ Can handle large number of values efficiently
	* Cons:
		+ Requires the input string to be present in the set, which may not always be the case

**Library usage**

The benchmark uses the `RegExp` object to create a regular expression pattern. The purpose of this library is to provide a way to define and match patterns in strings.

**Special JavaScript feature or syntax**

None mentioned in the provided JSON.

**Other alternatives**

If the developers wanted to test other approaches, they could consider adding additional test cases, such as:

* Using `in` operator for string matching
* Using `switch` statement for conditional checks
* Using a custom implementation using bit manipulation (e.g., using a bitmask)

However, it's worth noting that these alternatives might not be representative of the most common use cases in JavaScript programming.

**Benchmark preparation code explanation**

The script preparation code defines an object `Status` with four properties: `'PENDING'`, `'IN_PROGRESS'`, `'FAILED'`, and `'DONE'`. It then creates a variable `st` with the value `'done'`.

The script then creates three variables:

* `regexp`: a new regular expression with the values from `Status` as part of its pattern (using template literals)
* `set1`: a Set object containing the values from `Status`
* `set`: another Set object containing the same values as `set1`

These variables are used in the benchmark test cases to compare the performance of different approaches.

Related benchmarks:

Comparison different type of checking string values (version: 0)

Comparing performance of: Using logical operators vs Using RexExp vs Using set of values

Created: 4 years ago by: Guest

Jump to the latest result

Using logical operators

Using RexExp

Using set of values

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):