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parseInt vs slice
(version: 0)
Comparing performance of:
parseInt vs slice
Created:
3 years ago
by:
Guest
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Script Preparation code:
const pixelString = "120px";
Tests:
parseInt
const pixelString = "120px"; parseInt(pixelString);
slice
const pixelString = "120px"; pixelString.slice(0, 2)
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
parseInt
slice
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 what's being tested in the provided benchmark. **Benchmark Overview** The benchmark compares the performance of two approaches: `parseInt` and `slice`. The goal is to measure which approach is faster when extracting a substring from a string containing pixels (e.g., "120px"). **Options Compared** There are only two options compared: 1. **parseInt**: This function converts a string representation of a number to an integer. In this case, it's used to extract the numeric value from a pixel string. 2. **slice**: This method returns a new string that contains a subset of characters from the original string. It's used to extract the first two characters ("12") from the pixel string. **Pros and Cons** Here are some pros and cons of each approach: * **parseInt**: + Pros: Can be faster for small values, as it's a single operation. + Cons: May not work correctly if the input string is not in a format that can be easily parsed (e.g., "123px" instead of "120px"). * **slice**: + Pros: Always works correctly, regardless of the input string format. + Cons: May involve more overhead due to creating a new string and slicing the original string. **Library and Special JS Feature** There is no library used in this benchmark. However, it's worth noting that JavaScript has some special features related to strings and numeric conversions. For example, the `Number()` function can be used to convert a string to a number. This is not relevant to the current benchmark, but it's an interesting aside. **Other Alternatives** If you wanted to compare other approaches for extracting pixels from a pixel string, some alternatives might include: * Using a regular expression to match and extract the numeric value. * Using a string manipulation library like jQuery or Lodash to simplify the extraction process. * Using a more advanced method like image processing (if the goal is to extract dimensions from an image). **Benchmark Preparation Code** The provided script preparation code creates a constant `pixelString` with the value "120px". The HTML preparation code is empty, which means no additional setup or rendering of HTML elements is required for this benchmark. Overall, this benchmark provides a simple and focused comparison between two common approaches to extracting pixels from a string. It's helpful for developers who want to understand the relative performance characteristics of `parseInt` and `slice`.
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