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parseInt vs +
(version: 0)
Comparing performance of:
+ vs parseInt
Created:
5 years ago
by:
Registered User
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Script Preparation code:
var number = "12"
Tests:
+
var t = +number;
parseInt
var t = parseInt(number, 10);
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
+
parseInt
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 what's being tested in this benchmark. The benchmark is comparing the performance of two approaches: using the unary plus operator (`+`) and `parseInt()` to convert a string value to an integer. **Options Compared** 1. **Unary Plus Operator (`+`)**: This approach uses the unary plus operator to explicitly convert the string value to an integer. 2. **`parseInt()`**: This approach uses the built-in `parseInt()` function, which attempts to parse a string as an integer, optionally specifying a radix (base) parameter. **Pros and Cons** * **Unary Plus Operator (`+`)**: + Pros: Simple and straightforward implementation, does not require any additional libraries or dependencies. + Cons: May incur overhead due to the explicit conversion, potentially affecting performance in certain scenarios. * `parseInt()` : + Pros: Built-in function with a specific purpose, can be optimized for performance by leveraging the browser's internal parsing logic. + Cons: Requires an optional radix parameter, which may add complexity and uncertainty to the parsing process. **Library and Purpose** In this benchmark, it appears that no external library is being used. However, if we look at the `parseInt()` implementation, it does rely on the built-in JavaScript `parseInt()` function, which is a part of the ECMAScript standard. If you were to use an external library for parsing integers, some popular options include: * `moment.js` (for date and time parsing) * `json-parse/parse-int` (a lightweight library specifically designed for integer parsing) **Special JS Features or Syntax** This benchmark does not explicitly test any special JavaScript features or syntax. However, it's worth noting that the use of `parseInt()` with an optional radix parameter can be considered a "feature" in some contexts, as it allows for more flexibility and customization in parsing scenarios. Overall, this benchmark provides a simple and straightforward comparison between two approaches to converting string values to integers, highlighting the trade-offs between simplicity, performance, and customizability.
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