Benchmark: String.rename() vs String.split()

Script Preparation code:

var keyCombo = "d+Control+Shift"

Tests:

.rename()
var keyResult = keyCombo.replaceAll('+', '').replace('Control', '').replace('Shift', '')
.split
var keyResult = keyCombo.split('+')[0]

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
.rename()
.split

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 provided JSON and explain what is being tested.

**Benchmark Definition**

The benchmark is defined as a comparison between two approaches to extract a specific chunk from a string:

1. Using `String.rename()` (also known as `replaceAll()`)
2. Using `String.split()` with a custom separator

The purpose of this benchmark is to measure the performance difference between these two methods on a specific input.

**Options Compared**

In this case, we have two options being compared:

* `String.rename()` (or `replaceAll()`) - This method replaces all occurrences of one or more specified values (in this case, `+`, `Control`, and `Shift`) with an empty string. The resulting string is then returned.
* `String.split()` with a custom separator (`+` in this case) - This method splits the input string into an array using a specified separator.

**Pros and Cons of Each Approach**

Here are some pros and cons of each approach:

**String.rename() (or replaceAll())**

Pros:

* Flexible, as it can handle multiple separators
* Can be used for more complex replacements

Cons:

* May have performance implications due to the regular expression engine used under the hood
* May not be optimized for this specific use case

**String.split() with a custom separator**

Pros:

* Optimized for exact string splitting
* Typically faster than `replaceAll()` due to its optimized implementation in the browser's JavaScript engine

Cons:

* Limited flexibility, as only a single separator is allowed
* May not handle edge cases or complex replacements correctly

**Other Considerations**

In this benchmark, the input string is set to `"d+Control+Shift"`. This suggests that the goal is to extract the first part of the string (i.e., `d`) by removing the other parts.

**Library Used**

There is no explicit library mentioned in the provided JSON. However, it's likely that the browser's JavaScript engine is used under the hood for both methods.

**Special JS Feature or Syntax**

This benchmark uses a special syntax for regular expressions (`+` as a separator). However, since the input string is simple and easy to parse, this may not be a significant factor in the performance difference between the two approaches.

**Alternatives**

If you're interested in exploring other alternatives, here are some options:

* Use `String.prototype.replace()` with a regular expression instead of `replaceAll()`.
* Use a library like StringPilot or regex-string for more advanced string manipulation.
* Experiment with other splitting methods, such as `String.prototype.split()` with an empty separator or using a custom algorithm.

Related benchmarks:

String.rename() vs String.split() (version: 0)

Get specific chunk of a string either by splitting it into an array of known order or by renaming all predictable modifiers away from the desired string.

Comparing performance of: .rename() vs .split

Created: 3 years ago by: Guest

Jump to the latest result

.rename()

.split

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):