AS91906 - Programming Mark Scheme

[bradley-grover]

This contains a list of the programming marking scheme and all places that items are found.

[bradley-grover]

Achieved: written code for a program that performs a specified task

• [x] used variables storing at least two types of data (e.g., numeric, text, Boolean, object) (any *.cs file probably has this)
• [x] used sequence, selection and iteration control structures (for loops and foreach constructs as well as goto's and cases)
• [x] takes input from a user, file, sensors, or other external source (appsettings.json reads as configuration and IFormFile to upload pdf files, EF core database)
• [x] produces correct output (yes)
• [x] used complex techniques in a suitable programming language (C# or TypeScript)
• [x] programmed for a graphical user interface (GUI) (ASP.NET Core MVC on .NET 7, Tailwind CSS, HTML)
• [x] reading from, or writing to, files or other persistent storage (reads from several config files and writes files using IFileSaver, FileSaver custom solutions, EF core database)
• [x] set out the program code clearly and documenting the program with comments (all public functions in non-test/benchmark projects are annotated with XML comments)
• [x] tested and debugged the program to ensure that it works on a sample of expected cases (has several unit tests covering boundary of cases as well as integration tests and manual test cases in write up)

[bradley-grover]

Merit: The student has used at least four complex programming techniques to develop an informed computer program:

• [x] documented the program with appropriate variable/module names and organized comments that describe code function and behavior (see any file)
• [x] followed conventions for the chosen programming language (see any file)
• [x] tested and debugged the program in an organized way to ensure that it works on a sample of both expected cases and relevant boundary cases. (see writeup)

[bradley-grover]

Excellence: The student has used all complex programming techniques to develop a refined computer program: ● ensured that the program is a well-structured and provides logical response to the task (see writeup) ● made the program flexible and robust (see writeup) ● comprehensively tested and debugged the program (see writeup and https://github.com/Duo2023/Tech2023/tree/main/tests)

Complex Programming Techniques:

• [x] (using actions, conditions, control structures and, methods, functions or procedures effectively) (hundreds of methods and delegates, debug asserts, guard returns etc)
• [x] object-oriented programming using class(es) and objects defined by the student using third party or non-core API, library or framework (see https://github.com/Duo2023/Tech2023/tree/main/src/Tech2023.DAL/Models)
• [x] using complex data structures (e.g., stacks, queues, trees). (ValueStringBuilder is used to reduce allocations for string concats and building strings)
• [x] checking input data for validity and applied appropriate validation conventions (data validation happens in startup using OptionExtensions custom solution and data objects are annotated with data attributes)
• [x] correctly handling expected, boundary and invalid cases (if statements and early returns guard various controllers)
• [x] using constants, variables and derived values in place of literals. (consistent across codebase)
• [x] used GitHub for documenting iterative development process with appropriate commit and merge messages (see entire repo)