Week18.md

Author: wai-t

ClassNotes/The Tfl Project.pptx

@@ -0,0 +1,19 @@
+## 04-July-2025
+### Review of Chapter 1
+Chapter 1 was straightforward to follow. But at this stage:
+- if you can't explain it back line by line, you haven't understood all of it.
+- try not be content with black boxes that just work, try to get an idea of what's happening under the hood.
+
+I've added a last slide to [Build Systems](build_systems.pptx) to give you an idea of how the XAML is processed.
+
+### Tfl 2.0
+Migration of LineClient and Journey seems to be complete. Still to do the StopPoint functionality.
+
+We need to research the stage, Domain Analysis of what data the Tfl provides, make sure we understand it
+and make sure it does what we think it does. Then based on that, specify what we want Tfl 2.0 to do.
+[Analysis requirements](The%20Tfl%20Project.pptx)
+
+### TDD 2.0
+Upgraded the homework to include half-sibling relationships and refactored the solution classes to make
+the Person class now abstract, and add new Male and Female classes derived from this. The work here will
+be to decide whether methods are virtual, abstract, override or just a single method. 

ClassNotes/Week18.md

@@ -24,6 +24,7 @@ public interface IPerson
     }
     public abstract class Person : IPerson, IEquatable<Person?>
     {
+        // For every method, is it abstract, virtual, or concrete?
         readonly string _id = Guid.NewGuid().ToString();
         public string Id => _id;
 
@@ -37,6 +38,7 @@ public string Name {
             set => throw new NotImplementedException(); 
         }
 
+        
         public void AddDaughter(IPerson daughter)
         {
             throw new NotImplementedException();