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Run results for:
Perfomance: Switch vs Polymorphism
https://stackoverflow.com/questions/50401725/perfomance-switch-vs-polymorphism
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<iframe src="https://measurethat.net/Embed?id=505727" width="100%" height="500px"></iframe>
Run details:
User agent:
Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/121.0.0.0 Safari/537.36
Browser:
Chrome 121
Operating system:
Windows
Device Platform:
Desktop
Date tested:
2 years ago
Switch
1.9M/s
Polymorphism
1.3M/s
View exact numbers
Test name
Executions per second
✓
Switch
1,901,487 Ops/sec
Polymorphism
1,275,218 Ops/sec
Script Preparation code:
var class1 = { GetImportantValue: () => 1 }; var class2 = { GetImportantValue: () => 2 }; var class3 = { GetImportantValue: () => 3 }; var class4 = { GetImportantValue: () => 4 }; var class5 = { GetImportantValue: () => 5 }; getImportantValueSwitch = (myClassEnum) => { switch (myClassEnum.type) { case 'MyClass1': return 1; case 'MyClass2': return 2; case 'MyClass3': return 3; case 'MyClass4': return 4; case 'MyClass5': return 5; } } getImportantValuePolymorphism = (myClass) => myClass.GetImportantValue();
Tests:
Polymorphism
getImportantValuePolymorphism(class1); getImportantValuePolymorphism(class2); getImportantValuePolymorphism(class3); getImportantValuePolymorphism(class4); getImportantValuePolymorphism(class5);
Switch
getImportantValueSwitch({type: 'MyClass1'}); getImportantValueSwitch({type: 'MyClass2'}); getImportantValueSwitch({type: 'MyClass3'}); getImportantValueSwitch({type: 'MyClass4'}); getImportantValueSwitch({type: 'MyClass5'});