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COMP2404A Tuesday Apr 9 / 24

Darryl Hill・36 minutes read

The last day of class is April 9th, with a review session starting at 4:05 PM, covering topics like design patterns, UML diagrams, and operator overloading. The exam includes a practice final with hints, emphasizing technical questions, multiple choice, and programming aspects such as deep copy Constructors and memory management in data structures.

Insights

  • Programming assignments in the class cover a wide range of topics, including data structure manipulation, memory management, and class interactions within the context of projects like the movie flick app.
  • The exam for the class focuses heavily on technical questions related to programming concepts such as inheritance, operator overloading, exceptions, and understanding of key programming principles like deep copy constructors and range checks.

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Recent questions

  • What topics are covered in the multiple choice section of the exam?

    The multiple choice section of the exam covers design patterns, object design categories, and UML diagrams. It is important to have a solid understanding of these topics to perform well on this part of the exam.

  • How is memory management emphasized in the course material?

    Memory management is emphasized in the course material by highlighting the importance of transferring pointers rather than creating new objects. Consistent deletion of dynamically allocated memory is crucial to prevent memory leaks and ensure efficient use of resources.

  • What are the key concepts to understand about operator overloading?

    The key concepts to understand about operator overloading include the function signatures for operators like plus and assignment. It is crucial to grasp whether operator overloading should be implemented as a member or global function, depending on the parameters and their order.

  • What is the significance of virtual inheritance in the course content?

    Virtual inheritance simplifies the hierarchy by allowing for a single base class with a single name, resulting in three member variables. This contrasts with default inheritance, where each side (e.g., goat and human) would have their own name in their respective base class of animal.

  • How are data structures utilized in programming assignments?

    Programming assignments involve manipulating data structures like linked lists and arrays, understanding polymorphism, and managing memory. Functions like print movies, search by category, and add to watch list require a solid grasp of data structures and class interactions to successfully implement.

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Summary

00:00

Final Exam Review Session Details

  • Last day of class is April 9th, starting at 4:05 PM for a review session.
  • Review session includes an old practice final exam with hints on multiple choice and programming parts.
  • Encouragement to email if having trouble with assignments not compiling.
  • Exam is out of 45 marks, with less than 3 minutes per mark.
  • Programming worth 188 marks, multiple choice worth 27 marks.
  • Multiple choice topics include design patterns, object design categories, and UML diagrams.
  • Emphasis on technical questions likely to be seen in the exam.
  • Accessors explanation for public, protected, and private variables.
  • Understanding exceptions and tracing their flow in functions.
  • Deep copy Constructor example with dynamic memory allocation.

22:47

"Virtual inheritance simplifies hierarchy and memory management"

  • In multiple inheritance, each side (e.g., goat and human) would have a name in their respective base class of animal.
  • Without virtual inheritance, a centaur would have four member variables: two names, and two numbers of feet.
  • With virtual inheritance, the hierarchy is simplified to one base class with a single name, resulting in three member variables.
  • Default inheritance leads to the human and goat calling the animal constructor, while virtual inheritance requires the centaur to call the constructor directly.
  • Understanding operator overloading is crucial, including the function signatures for operators like plus and assignment.
  • Operator overloading can be a member or global function, depending on the parameters and their order.
  • Programming assignments will involve manipulating data structures like linked lists and arrays, understanding polymorphism, and managing memory.
  • The movie flick app involves classes like movie, profile, and movieFlix, with functionalities like adding movies, searching by category, and managing watch lists.
  • Implementing functions like print movies, search by category, and add to watch list requires understanding of data structures and class interactions.
  • Memory management is essential, with pointers being transferred rather than creating new objects, and consistent deletion of dynamically allocated memory is crucial.

45:50

Data Structure Operations and Best Practices

  • When removing an element from a linked list, if there are more than two items, the tail pointer does not need adjustment; if only one item exists, both head and tail should point to null after removal.
  • For arrays, a backing array of type T is created using a pointer, with elements initialized as new T. Adding elements at an index or in sorted order requires understanding of shifting elements accordingly.
  • When adding or removing elements in an array, the process involves finding the position, shifting elements, and updating the count of elements without necessarily erasing them.
  • Range checks are essential when accessing elements in functions; failure to perform them may result in a deduction of marks.
  • Understanding the logic behind templated classes is crucial, including knowing what is returned (e.g., by const reference) and ensuring correct template declarations.
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