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Nested tenary vs dictionary
(version: 0)
Comparing performance of:
Tenary vs Dictionary
Created:
3 years ago
by:
Guest
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Script Preparation code:
var random = Math.floor(Math.random() * 20);
Tests:
Tenary
const status_ = random === 0 ? -Math.PI: random === 1 ? Math.EPSILON: random === 2 ? 1: random === 3 ? 1: random === 4 ? 1: random === 5 ? 1: random === 6 ? 1: random === 7 ? 1: random === 8 ? 1: random === 9 ? 1: random === 18 ? 5: random === 19 ? 28: random === 20 ? 0: -1;
Dictionary
const test = { 0: -Math.PI, 1: Math.EPSILON, 2: 1, 3: 1, 4: 1, 5: 1, 6: 1, 7: 1, 8: 1, 9: 1, 18: 5, 19: 28, 20: 0, }; status_ = test[random] || -1;
Rendered benchmark preparation results:
Suite status:
<idle, ready to run>
Run tests (2)
Previous results
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Test case name
Result
Tenary
Dictionary
Fastest:
N/A
Slowest:
N/A
Latest run results:
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark compares two ways of achieving the same result in JavaScript: using nested ternary operators and using an object (dictionary) to map values. **Options Compared:** * **Nested Ternary Operators:** This approach uses a chain of `? :` expressions to check conditions and return different values based on the result. Each ternary operator checks one condition and returns a value accordingly, creating a nested structure. * **Dictionary (Object):** This approach uses an object where keys represent specific input values and values are the corresponding results. The code looks up the result using the provided `random` value as the key in the object. **Pros & Cons:** | Approach | Pros | Cons | |-------------------|------------------------------------------|-------------------------------------------| | **Nested Ternary** | - Can be concise for simple cases | - Becomes increasingly complex and hard to read with many conditions. <br> - Potentially slower for larger numbers of conditions due to repeated evaluations. | | **Dictionary (Object)** | - More readable and maintainable, especially for complex mappings. <br>- Potentially faster for large numbers of conditions as lookups are direct. | - Requires more initial setup with the object creation. | **Other Considerations:** * **Code Clarity:** For a relatively small number of conditions like this example, both approaches might be acceptable in terms of readability. However, for complex scenarios with many conditions, the dictionary approach is significantly clearer and easier to understand. * **Performance:** While the benchmark results indicate a slight performance difference, it's important to note that performance gains from using a dictionary over nested ternaries are more noticeable when dealing with a large number of conditions. In this specific case, the difference might be negligible. **Alternatives:** * **Switch Statement:** For scenarios with distinct cases and values, a `switch` statement can offer better readability and potentially improved performance compared to nested ternary operators. Let me know if you have any other questions about this benchmark or JavaScript in general!
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