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split some vs indexOf vs includes
(version: 1)
Which is faster, splitting a string into pieces and searching for something specific at the start of each section, or just searching for the splitter and what comes after
Comparing performance of:
split some vs indexOf vs includes
Created:
4 years ago
by:
Registered User
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Tests:
split some
const key = 'key.with.separated.values._meta' const result = key.split('.').some((part) => part.charAt(0) === '_');
indexOf
const key = 'key.with.separated.values._meta' const result = key.indexOf('._') > -1;
includes
const key = 'key.with.separated.values._meta' const result = key.includes('._');
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Suite status:
<idle, ready to run>
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Test case name
Result
split some
indexOf
includes
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark compares three different approaches to determining if the string `'key.with.separated.values._meta'` contains the substring `'._'`. **Here's a breakdown of each approach:** * **`split some`:** This method splits the string at each period (`.`) and then uses the `.some()` array method to check if any part of the split string starts with an underscore (`_`). * **Pros:** Potentially flexible as you can customize what characters are used for splitting. * **Cons:** Can be slower than `indexOf` or `includes` due to the additional steps involved in splitting and iterating through the array. * **`indexOf`:** This method uses the built-in `indexOf()` function to find the index of the substring `'._'` within the string. If it returns a value greater than -1, it means the substring is present. * **Pros:** Generally efficient and optimized for string searching. * **Cons:** Can only search for a single substring at a time. * **`includes`:** This method uses the built-in `includes()` function to directly check if the string contains the substring `'._'`. * **Pros:** Concise and readable, potentially more efficient than `indexOf` in some cases. * **Cons:** Similar to `indexOf`, can only search for a single substring at a time. **Other Considerations:** * **Edge Cases:** Consider how each method handles empty strings or substrings that are not present. * **Specificity:** If you need to search for more complex patterns, regular expressions might be a better option than these basic string methods. Let me know if you have any other questions about JavaScript benchmarking or specific performance concerns!
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String.split vs String.substring
String.indexOf vs Array split and includes
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