Benchmark: array replace string2

Tests:

no regex
const diacritics = ["€", "â", "à", "á", "ã", "å", "ç", "ñ", "é", "ê", "ë", "è", "í", "î", "ï", "ì", "À", "Á", "Ã", "Å", "Ñ", "Ø", "ø", "É", "Ê", "È", "Í", "Î", "Ï", "Ì", "ð", "ý", "µ", "Ð", "Ý", "×", "ô", "¦", "ò", "ó", "õ", "û", "ù", "ú", "ÿ", "Ô", "Ò", "Ó", "Õ", "Û", "Ù", "Ú", "Ä", "Ö", "Ü", "Ï", "ß", "ä", "ö", "ü", "ï", "ą", "Ą", "ę", "Ę", "Ó", "ó", "ć", "Ć", "ł", "Ł", "ń", "Ń", "Ś", "ś", "Ż", "ż", "ź", "Ź"]; let value = 'Long Ócompany nameÓ before can replaceÓ'; for(let i = 0, l = diacritics.length; i < l; i++) value = value.replace(diacritics[i], `${diacritics[i]}‎`);
regex
const diacritics2 = /([€âàáãåçñéêëèíîïìÀÁÃÅÑØøÉÊÈÍÎÏÌðýµÐÝ×ô¦òóõûùúÿÔÒÓÕÛÙÚÄÖÜÏßäöüïąĄęĘÓóćĆłŁńŃŚśŻżźŹ])/g; let value2 = 'Long Ócompany nameÓ before can replaceÓ'; value2 = value2.replace(diacritics2, `$1${'‎'}`);

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
no regex
regex

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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Let's break down the benchmark and its options.

**Benchmark Definition**

The benchmark is designed to measure the performance of replacing string values in an array using different approaches.

**Options Compared**

There are two main options compared:

1. **No Regex**: This approach uses a `for` loop to iterate over the `diacritics` array and replace each character in the `value` string with its corresponding modified version (`${diacritics[i]}‎`).
2. **Regex**: This approach uses a regular expression (regex) pattern (`diacritics2`) to match and replace the same characters in the `value2` string.

**Pros and Cons**

**No Regex:**

Pros:

* Easy to understand and implement for developers familiar with JavaScript loops.
* May be faster for smaller arrays or strings.

Cons:

* Can be slower for large arrays or strings due to the overhead of multiple iterations.
* Requires explicit looping logic, which can lead to additional maintenance issues.

**Regex:**

Pros:

* Faster for large arrays or strings since it leverages the optimized regex engine.
* More concise and expressive syntax, making it easier to maintain and extend.

Cons:

* May be more difficult to understand and implement for developers without prior experience with regex patterns.
* Can lead to increased memory usage due to the creation of regex objects.

**Library Used**

None explicitly mentioned. However, JavaScript's built-in `String.prototype.replace()` method is used in both benchmark definitions.

**Special JS Feature/Syntax**

There are a few special features used:

1. **Template Literals**: The `${...}` syntax is used for template literals, which allows concatenating strings and variables.
2. **Regex Patterns**: The regex pattern `diacritics2` uses the `/g` flag to ensure all matches are replaced, not just the first one.

**Other Alternatives**

If the developers wanted to explore alternative approaches, they could consider:

1. Using a dedicated string replacement library or function (e.g., `String.prototype.replaceAll()`).
2. Leveraging JavaScript's built-in `Array.prototype.map()` method to create a new array with modified values.
3. Utilizing a Just-In-Time (JIT) compiler like SpiderMonkey (used in Firefox) to optimize the benchmark.

Keep in mind that these alternatives might not offer significant performance improvements and may introduce additional complexity.

Related benchmarks:

array replace string2 (version: 0)

Array replaces string

Comparing performance of: no regex vs regex

Created: 3 years ago by: Guest

Jump to the latest result

no regex

regex

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):