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test if vs select case
(version: 0)
Comparing performance of:
if vs case
Created:
3 years ago
by:
Guest
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Tests:
if
function test(docRecType) { if (docRecType === "File") { return 2 } if (["Attachment", "Ident", "Procedure", "Section", "Step"].includes(docRecType)) { return 3 } if (["Autocomplete", "Category", "FeatureFlag"].includes(docRecType)) { return 4 } if (docRecType === "Event") { return 5 } } test('FeatureFlag')
case
function testB(docRecType) { switch (docRecType) { case "File": return 2 case "Attachment": case "Procedure": case "Ident": case "Section": case "Step": return 3 case "Autocomplete": case "Category": case "FeatureFlag": return 4 case "Event": return 5 default: break } } testB('FeatureFlag')
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Suite status:
<idle, ready to run>
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Test case name
Result
if
case
Fastest:
N/A
Slowest:
N/A
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Autogenerated LLM Summary
(model
gemma2:9b
, generated one year ago):
This benchmark compares two approaches for determining the value to return based on a given input string (`docRecType`): * **Approach 1: `if` statements:** This approach uses a chain of `if` statements to check each possible value of `docRecType`. If a match is found, the corresponding return value is executed. * **Approach 2: `switch` statement:** This approach uses a `switch` statement, which evaluates the `docRecType` and executes the code block associated with the matching `case`. **Pros and Cons:** * **`if` statements:** * **Pros:** Can be easier to read for simple cases with few possibilities. * **Cons:** Can become verbose and difficult to maintain as the number of possible values increases. * **`switch` statement:** * **Pros:** More concise and efficient for handling many possibilities. * **Cons:** Can be slightly harder to read for beginners, especially with complex cases involving multiple `case` statements. **Alternatives:** * **Object Mapping:** A common alternative is to use an object where the keys are the possible `docRecType` values, and the values are the corresponding return values. You can then look up the value using `object[docRecType]`. This approach is often considered more readable and maintainable for larger sets of possibilities. * **Function Mapping:** Similar to object mapping, you could define a function that takes `docRecType` as input and returns the appropriate value. This approach can be useful when the logic involves more complex calculations than simple lookups. **Other Considerations:** The benchmark results demonstrate that in this specific scenario, the `switch` statement (`case`) performs significantly faster than the `if` statements. This highlights the efficiency benefits of using a `switch` statement for cases with numerous possibilities. Let me know if you have any more questions or would like to explore other aspects of JavaScript benchmarking!
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