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test split vs substring
(version: 0)
Comparing performance of:
substring vs split
Created:
4 years ago
by:
Guest
Jump to the latest result
Script Preparation code:
var s1 = "foo.bar"; var s2 = "foo";
Tests:
substring
var x = s1.indexOf(".") if(x !== -1) { var n1 = s1.substring(0, x); } var x2 = s2.indexOf('.') if(x2 !== -1) { var n2 = s2.substring(0, x2); }
split
var n1 = s1.split(".")[0]; var n2 = s2.split(".")[0];
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
substring
split
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided JSON data and explain what's being tested. **Benchmark Definition** The benchmark is comparing two approaches to extract a part of a string in JavaScript: `substring` and `split`. **Options Compared** 1. **Substring**: This method uses the `indexOf()` method to find the index of the specified character (`.`) in the string, and then extracts the substring from the beginning to that index using `substring()`. 2. **Split**: This method splits the entire string into an array of substrings using a regular expression with a dot (`\.`) as the separator. **Pros and Cons** * **Substring** + Pros: Can be more efficient for small strings, as it only extracts one part. + Cons: May have performance issues if the string is very large or contains many occurrences of the specified character. * **Split** + Pros: Can handle multiple separators and can extract multiple parts from a single string. + Cons: May have overhead due to creating an array, which can be slow for small strings. **Library/Function Used** None are explicitly mentioned in this benchmark. However, it's worth noting that `indexOf()` and `substring()` are built-in JavaScript functions. **Special JS Feature/Syntax** No special features or syntax are used in this benchmark. **Other Considerations** The benchmark measures the performance of these two approaches on a specific string (`"foo.bar"`). The test cases are run in a browser environment, which may introduce additional overhead due to rendering and event handling. To get accurate results, it's essential to use a consistent test setup and avoid any optimizations that might affect the performance. **Alternatives** Other alternatives for extracting parts of strings include: * Using regular expressions with `match()` or `matchAll()` * Using a library like Lodash or Underscore.js, which provide efficient string manipulation functions. * Using a string processing library like StringPilot or StringManipulation. These alternatives may have their own performance characteristics and trade-offs, but they can provide more flexibility and power than the simple substring and split approaches.
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