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slice vs substr vs substring (with no end index but longer)
(version: 0)
Compares slice, substr and substring to each other when there is only a start index
Comparing performance of:
slice vs substr vs substring
Created:
7 years ago
by:
Guest
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Script Preparation code:
var example = 'there is no spoon'
Tests:
slice
var result = example.slice(2)
substr
var result = example.substr(2)
substring
var result = example.substring(2)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (3)
Previous results
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Test case name
Result
slice
substr
substring
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
llama3.2:3b
, generated one year ago):
Let's break down the benchmark and its test cases to understand what's being tested. **Benchmark Definition** The website is testing three different methods: `slice()`, `substr()`, and `substring()` with no end index but a longer string input (`example = 'there is no spoon'`). **Options Compared** The options being compared are: 1. `slice()`: A method that extracts a section of a string, starting at the specified index (2 in this case) and returning a new string. 2. `substr()`: A method that extracts a section of a string, starting at the specified index (2 in this case), with no end index provided. This implies that it will return until the end of the string. 3. `substring()`: Similar to `substr()`, but specifically designed for this purpose. **Pros and Cons** Here's a brief summary: * **slice()**: Pros: Fast, efficient. Cons: Not designed for this specific use case, might not be as efficient as it could be. * **substr()**: Pros: Specifically designed for extracting substrings without an end index, relatively fast. Cons: May have issues if the string is very long or has many null characters, and its behavior can vary between browsers. * `substring()`: Pros: Specifically designed for this use case, efficient, and well-supported by most browsers. Cons: None notable. **Library Used** None of these methods use a specific library; they are built-in JavaScript methods. **Special JS Features or Syntax** No special features or syntax are used in these test cases. The only consideration is the usage of `slice()`, `substr()`, and `substring()` with no end index provided. **Other Alternatives** If you wanted to use a different approach, you could have: * Used the `indexOf()` method followed by slicing the resulting index and length. * Used regular expressions (regex) to extract the substring. * Used a library like Lodash or Underscore.js for string manipulation. * Used a more complex loop-based approach. Keep in mind that these alternatives might not be as efficient or well-supported as the built-in methods used in this benchmark.
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