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Task: Support polymorphism with virtual member functions

Polymorphism is one of the most powerful concepts in OOP (object oriented programming). It allows us to write code in terms of high level abstractions, e.g. we could send a draw message to an object of type Shape without knowing if the actual object in memory is a Square or Rectangle. The object itself would respond differently to the requested operations depending on what type it actually is.

In this task we will be exploring how to achieve polymorphic behavior in C++ through public inheritance and dynamic binding (virtual functions).

System.InvalidOperationException: The model item passed into the dictionary is of type 'LearningLine.Interface.ICourse[]', but this dictionary requires a model item of type 'LearningLine.Mongo.Course[]'. at System.Web.Mvc.ViewDataDictionary`1.SetModel(Object value) at System.Web.Mvc.ViewDataDictionary..ctor(ViewDataDictionary dictionary) at System.Web.Mvc.WebViewPage`1.SetViewData(ViewDataDictionary viewData) at RazorGenerator.Mvc.PrecompiledMvcView.Render(ViewContext viewContext, TextWriter writer) at System.Web.Mvc.HtmlHelper.RenderPartialInternal(String partialViewName, ViewDataDictionary viewData, Object model, TextWriter writer, ViewEngineCollection viewEngineCollection) at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model, ViewDataDictionary viewData) at System.Web.Mvc.Html.PartialExtensions.Partial(HtmlHelper htmlHelper, String partialViewName, Object model) at ASP._Views_Tasks_ShowPublic_cshtml.Execute()

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