Benchmark: splice vs replace

Tests:

splice
const str = '(hello)'.slice(0, -1);
replace
const str = '(hello)'.replace(/[()]/g,'')

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
splice
replace

Fastest: N/A

Slowest: N/A

Latest run results:

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

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/134.0.0.0 Safari/537.36

Browser/OS: Chrome 134 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
splice	163927312.0 Ops/sec
replace	19141066.0 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 provided benchmark definition and explain what is being tested.

**Benchmark Definition**

The `splice vs replace` benchmark compares the performance of two different methods to remove parentheses from a string: `slice()` (or `splice`) and `replace()`. The benchmark aims to determine which method is faster for this specific use case.

**Options Compared**

Two options are being compared:

1. **splice**: Uses the `slice()` method or `splice()` method, depending on the browser implementation, to remove a specified number of characters from the end of a string.
2. **replace**: Uses the `replace()` method with a regular expression (regex) to replace all occurrences of parentheses with an empty string.

**Pros and Cons**

Here are some pros and cons of each approach:

1. **splice**:
	* Pros: Typically faster than `replace()` for this specific use case, as it avoids creating an intermediate regex object.
	* Cons: May not be supported by older browsers or versions of JavaScript that do not have a `slice()` method.
2. **replace**:
	* Pros: Generally more flexible and can handle more complex string manipulation tasks than `splice`.
	* Cons: Slower for this specific use case due to the overhead of creating and executing a regex.

**Library Usage**

There is no explicit library usage in these benchmark definitions. However, it's worth noting that some browsers' implementations may rely on libraries or built-in functions that are not directly exposed in JavaScript APIs.

**Special JS Features or Syntax**

There are no special JS features or syntax used in these benchmark definitions.

**Other Alternatives**

If you're interested in exploring other alternatives for string manipulation benchmarks, here are a few examples:

* `substring()`: Another method to remove characters from the end of a string.
* `split()` and `join()`: Can be used together to achieve similar results as `splice` or `replace`.
* Regular expressions (regex): Can be used for more complex string matching and manipulation tasks, but may have performance implications.

In general, when creating benchmarks, it's essential to consider the specific requirements of your use case and choose methods that are both efficient and relevant.

Related benchmarks:

splice vs replace (version: 0)

Comparing performance of: splice vs replace

Created: 4 years ago by: Guest

Jump to the latest result

splice

replace

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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