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Which comparison operator (> vs ===) is faster? (fork with the correct code)
(version: 1)
Is there a performance benefit to replacing > with ===?
Comparing performance of:
test greater than vs test strict equality
Created:
8 months ago
by:
Guest
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Tests:
test greater than
var n = 0; while (true) { n++; if (n > 99999) break; }
test strict equality
var n = 0; while (true) { n++; if (n === 100000) break; }
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
test greater than
test strict equality
Fastest:
N/A
Slowest:
N/A
Latest run results:
Run details:
(Test run date:
8 months ago
)
User agent:
Mozilla/5.0 (Windows NT 6.1; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/108.0.0.0 Safari/537.36
Browser/OS:
Chrome 108 on Windows 7
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<iframe src="https://measurethat.net/Embed?id=615910" width="100%" height="500px"></iframe>
Test name
Executions per second
test greater than
9037.0 Ops/sec
test strict equality
9038.3 Ops/sec
Autogenerated LLM Summary
(model
gpt-4o-mini
, generated 8 months ago):
This benchmark is designed to compare the performance of two comparison operators in JavaScript: the greater than operator (`>`) and the strict equality operator (`===`). The purpose of the benchmark is to investigate whether there is a significant performance difference when using these two operators in similar looping constructs. ### Benchmark Overview **1. Tested Operations:** - **Greater Than (`>`)**: This operator checks if the left-hand operand is greater than the right-hand operand. - **Strict Equality (`===`)**: This operator checks if both operands are equal and of the same type, ensuring strict type checking. ### Test Cases Each test case consists of a loop that increments a counter until a condition is met: - **Test Case 1: `test greater than`:** ```javascript var n = 0; while (true) { n++; if (n > 99999) break; } ``` In this test, the loop continues incrementing `n` until it is greater than `99999`. - **Test Case 2: `test strict equality`:** ```javascript var n = 0; while (true) { n++; if (n === 100000) break; } ``` In this test, the loop increments `n` until it is exactly `100000`. ### Results Analysis From the benchmark results, we see the number of executions per second for each test: - **Strict Equality** executed at approximately **9038.32 executions per second.** - **Greater Than** executed at approximately **9037.04 executions per second.** #### Performance Insights - **Pros of Using `>`:** - Simple and intuitive for a continuous range comparison. - **Pros of Using `===`:** - Useful for checking specific values and type safety, which might lead to avoided bugs in scenarios where types could mismatch. #### Cons and Considerations - **Cons of Using `>`:** - Can lead to off-by-one errors if not careful, especially in loops where boundaries are critical. - **Cons of Using `===`:** - Although very precise, it might cause confusion when dealing with increment operations that lead to off-by-one conditions. ### Other Alternatives 1. **Less Than (`<`)**: Similar to `>`, can be used for comparisons but doesn't fit the context of this benchmark. 2. **Loosely Typed Equality (`==`)**: This operator performs type coercion, which can yield different results depending on the types involved. Its performance impact might differ greatly compared to strict equality but should be avoided unless explicitly required to handle type differences. 3. **Using Libraries**: In scenarios where comparisons might become more complex or require additional checks, libraries like Lodash or Underscore.js could be utilized for their utility functions, but they can introduce overhead and potentially impact performance. ### Special Considerations - There is no use of unique JavaScript features or syntax in these tests that would require further explanation. - The choice between `>` and `===` primarily revolves around the nature of the comparison needed rather than any JavaScript syntactical or feature advantages. This benchmark illustrates that both methods perform similarly in well-defined conditions. ### Conclusion This benchmark effectively evaluates the performance of two commonly-used comparison operators, providing insights into their execution speed in loops. While the results indicate very similar performance, the choice between `>` and `===` will depend more on the logical requirements of the conditions being checked rather than performance alone.
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