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String.indexOf vs Array split and includes
(version: 0)
Comparing performance of:
string.indexOf() vs array split and includes
Created:
3 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var str = "asdfgdf,gdf,foobar,sdfs,dfasdf";
Tests:
string.indexOf()
var res = str.indexOf("foobar");
array split and includes
var res = str.split(",").includes("foobar");
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
string.indexOf()
array split and includes
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
I'd be happy to help explain the benchmark! **What is being tested?** The provided JSON represents a JavaScript microbenchmark that tests two different approaches for finding a substring within a string: 1. `string.indexOf()` 2. `array split and includes` In the first approach, `string.indexOf()` is used to search for a specific substring ("foobar") within the string "asdfgdf,gdf,foobar,sdfs,dfasdf". This method returns the index of the first occurrence of the substring if found, or -1 otherwise. The second approach uses the `split()` method to split the original string into an array of substrings using commas as separators. It then uses the `includes()` method to check if "foobar" is included in the resulting array. **Options compared** In this benchmark, we have two main options being compared: A) `string.indexOf()`: a simple and efficient approach that's widely supported by JavaScript engines. B) `array split and includes`: an alternative approach that uses more operations (splitting and checking membership) to achieve the same result as `indexOf()`. **Pros and cons of each approach** A) `string.indexOf()`: Pros: * Fast and efficient * Widely supported by most JavaScript engines * Simple to implement Cons: * Only searches for the first occurrence of the substring * May not be suitable for large strings or datasets B) `array split and includes`: Pros: * Can find all occurrences of a substring (not just the first one) * May be useful in certain scenarios where `indexOf()` is not sufficient Cons: * Requires more operations than `indexOf()`, making it potentially slower * More complex implementation **Library/External Functionality** In this benchmark, we don't see any explicit libraries or external functions being used. However, it's worth noting that the use of `includes()` method might be specific to some JavaScript engines (e.g., Chrome). **Special JS Feature/Syntax** There are no special features or syntax being tested in this benchmark. **Other Alternatives** If you're looking for alternative approaches to finding a substring within a string, here are a few more: * Using regular expressions (`RegExp` objects): This approach can be both faster and more flexible than `indexOf()`, but may also have a steeper learning curve. * Using string manipulation techniques (e.g., indexing, slicing, or using `substr()`/`substring()` methods): These approaches might be slower than `indexOf()`, but could provide more control over the search process. Keep in mind that these alternatives are not directly comparable to `string.indexOf()` and `array split and includes` without additional context.
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