Benchmark: how-to-insert-a-string-at-a-specific-index-in-javascript 2

Tests:

slcie
let origString = "GeeksGeeks"; let stringToAdd = "For"; let indexPosition = 5; newString = origString.slice(0, indexPosition) + stringToAdd + origString.slice(indexPosition);
splice
let origString = "GeeksGeeks"; let stringToAdd = "For"; let indexPosition = 5; // Split the string into individual // characters origString = origString.split(''); // Insert the string at the index position origString.splice(indexPosition, 0, stringToAdd); // Join back the individual characters // to form a new string newString = origString.join('');

Rendered benchmark preparation results:

Suite status: <idle, ready to run>

Previous results

Test case name	Result
slcie
splice

Fastest: N/A

Slowest: N/A

Latest run results:

Run details: (Test run date: 2 years ago)

User agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36

Browser/OS: Chrome 121 on Mac OS X 10.15.7

View result in a separate tab

Test name	Executions per second
slcie	12172210.0 Ops/sec
splice	4175572.0 Ops/sec

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

LLMs can make mistakes. Check important info.

I'd be happy to help you understand what's being tested on the provided JSON and explain the different approaches used in the benchmark.

**Benchmark Definition**

The benchmark definition is a set of two test cases, each measuring the performance of inserting a string at a specific index in JavaScript. The first test case, "slcie," uses the `slice()` method to create a new string by taking a subset of the original string and concatenating it with another string. The second test case, "splice," uses the `splice()` method to insert the string into the original string.

**Options Compared**

The benchmark compares two different approaches:

1. **`slice()` method**: This approach creates a new string by taking a subset of the original string using `slice()`. It then concatenates the inserted string with the remaining part of the original string.
2. **`splice()` method**: This approach modifies the original string in-place and inserts the string at the specified index using `splice()`. The resulting string is not stored, so it's only valid for a single execution.

**Pros and Cons**

Here are some pros and cons of each approach:

* **`slice()` method**:
	+ Pros: Creates a new string with minimal overhead, can be more efficient for large strings.
	+ Cons: Can lead to unnecessary memory allocations if the resulting string is not used immediately.
* **`splice()` method**:
	+ Pros: Modifies the original string in-place, reduces memory allocations.
	+ Cons: Can lead to slower performance due to the overhead of modifying the string.

**Library**

Neither of the test cases uses any external libraries. However, it's worth noting that some JavaScript engines, like V8 (used by Google Chrome), have built-in optimizations for certain operations, such as string manipulation.

**Special JS Features or Syntax**

There are no special JavaScript features or syntax used in these benchmark definitions. They only use standard JavaScript language elements and methods.

**Other Alternatives**

If you were to implement this benchmark yourself, some alternative approaches could include:

1. **Using `concat()` instead of `slice()`**: This would concatenate the inserted string with the original string using the `concat()` method.
2. **Using a temporary array and `join()`**: Instead of creating a new string using `slice()`, you could create a temporary array with the characters of the original string and then join them together using the `join()` method.
3. **Using a loop to insert the string**: You could use a loop to iterate over the characters of the original string and insert the inserted string at each index, rather than using `splice()`.

Keep in mind that these alternatives might change the performance characteristics of the benchmark, so it's essential to test them thoroughly to ensure they meet your requirements.

Related benchmarks:

how-to-insert-a-string-at-a-specific-index-in-javascript 2 (version: 1)

Comparing performance of: slcie vs splice

Created: 3 years ago by: Registered User

Jump to the latest result

slcie

splice

Suite status: <idle, ready to run>

Fastest: N/A

Slowest: N/A

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