where T : class, new()
public void MakeCars()
{
//This won't compile as researchEngine doesn't have a public constructor and so can't be instantiated.
CarFactory<ResearchEngine> researchLine = new CarFactory<ResearchEngine>();
var researchEngine = researchLine.MakeEngine();
//Can instantiate new object of class with default public constructor
CarFactory<ProductionEngine> productionLine = new CarFactory<ProductionEngine>();
var productionEngine = productionLine.MakeEngine();
}
public class ProductionEngine { }
public class ResearchEngine
{
private ResearchEngine() { }
}
public class CarFactory<TEngine> where TEngine : class, new()
{
public TEngine MakeEngine()
{
return new TEngine();
}
}
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