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Split String VS Split Regex
(version: 0)
Comparing performance of:
Split String vs Split Regex
Created:
4 years ago
by:
Guest
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Tests:
Split String
const s = "**Someone** is chopping with **__THREE CHAINSAW__**!! one of them in each hand, and the last one in their mouth\n**Someone** got 73 <:woodenlog:51465165165146516146541> wooden log" s.split("THREE CHAINSAW");
Split Regex
const s = "**Someone** is chopping with **__THREE CHAINSAW__**!! one of them in each hand, and the last one in their mouth\n**Someone** got 73 <:woodenlog:51465165165146516146541> wooden log" s.split(/(THREE CHAINSAW)/);
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Suite status:
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Test case name
Result
Split String
Split Regex
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Slowest:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the provided benchmark and explain what's being tested. **What is tested?** The benchmark compares two approaches for splitting a string: 1. **String Split**: Using the `split()` method with a plain string argument (`"THREE CHAINSAW"`). 2. **Regular Expression Split**: Using the `split()` method with a regular expression pattern (`/(THREE CHAINSAW)/`). **Options compared** The benchmark compares the performance of these two approaches for splitting a specific string. **Pros and Cons:** * **String Split**: + Pros: Simple, easy to read, and understand. + Cons: May not be optimized for performance, especially for large strings or complex patterns. * **Regular Expression Split**: + Pros: Can handle complex patterns and is optimized for performance. + Cons: More verbose and harder to read, requires a good understanding of regular expressions. The choice between the two approaches depends on the specific use case. If you need to split a simple string with a fixed pattern, the plain `split()` method might be sufficient. However, if you need to handle more complex patterns or optimize for performance, using a regular expression is often a better choice. **Library and purpose** In this benchmark, the `split()` method is a built-in JavaScript function. It's used to divide a string into an array of substrings based on a specified pattern. **Special JS feature or syntax** There isn't any special JavaScript feature or syntax being tested in this benchmark. **Other alternatives** If you want to compare other splitting methods, here are some alternatives: * **Substrings**: Using the `str.split()` method with a custom separator function. * **Regex alternatives**: Using the `String.prototype.match()` method instead of `split()`. * **Library functions**: Using a library like Lodash's `string.split()` method. Keep in mind that each approach has its own trade-offs and may be better suited for specific use cases. The provided benchmark results show the performance differences between the two approaches: * **Split String**: 57936808.0 executions per second. * **Split Regex**: 15900465.0 executions per second. These numbers indicate that the plain `split()` method is significantly faster than using a regular expression pattern, likely due to the overhead of compiling and executing the regular expression engine.
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