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'==' vs test
(version: 0)
benchmark to know performance of equating with '==' vs test method
Comparing performance of:
test with == vs test with test
Created:
2 years ago
by:
Guest
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Tests:
test with ==
asnStatus = 'APPROVED'; if (!(asnStatus == 'APPROVED' || asnStatus == 'PARTIALLY_APPROVED')) console.log("tested with if")
test with test
asnStatus = 'APPROVED'; if (!(/^APPROVED$|^PARTIALLY_APPROVED/.test(asnStatus))) console.log("tested with test method")
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
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Test case name
Result
test with ==
test with test
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 the benchmark and analyze what's being tested. **Overview** The benchmark is designed to compare the performance of two approaches for checking if a string matches a specific pattern: the `===` operator (equality with assignment) versus the `test()` method (using regular expressions). **Options Compared** Two options are compared: 1. **`===` operator**: This operator checks if two values are equal using both value and type equality. In this case, it's used to check if the `asnStatus` variable matches either "APPROVED" or "PARTIALLY_APPROVED". 2. **`test()` method**: This method is used with regular expressions to search for a pattern in a string. In this case, it's used to check if the `asnStatus` variable matches the patterns "APPROVED" or "PARTIALLY_APPROVED". **Pros and Cons** Here are some pros and cons of each approach: * **`===` operator**: + Pros: Simple, fast, and widely supported. + Cons: Can be slower than regular expressions for complex pattern matching, may not handle Unicode characters correctly, and can lead to unexpected results if the variables are reassigned before comparison. * **`test()` method**: + Pros: More flexible and powerful than `===`, can handle complex patterns, and is more robust when dealing with Unicode characters. However, it's slower than `===` for simple pattern matching. + Cons: Can be slower than `===` in general, may require more memory to store the regular expression. **Library and Special JS Features** In this benchmark, no specific JavaScript library is used beyond the built-in `test()` method for regular expressions. There are no special JavaScript features or syntax being tested in this benchmark. **Alternative Approaches** Other approaches that could be used to check if a string matches a pattern include: * Using `String.prototype.match()`: This method returns an array containing the first match of the pattern, or null if no match is found. * Using `String.prototype.replace()`: This method replaces occurrences of the pattern in the string with another value. By setting the replacement to an empty string, it can be used to test for matches. **Benchmark Preparation Code** The benchmark preparation code is not provided, but based on the benchmark definition and individual test cases, it appears that the script is simply assigning a value to `asnStatus` and then using one of the two comparison operators to check if it matches a specific pattern. I hope this explanation helps!
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