: The guide begins by establishing the "why" behind agile.
Software should be open for extension, closed for modification. Add new features without breaking existing code. iskov Substitution Subtypes must be substitutable for their base types. Ensures that inheritance doesn't break logic. I nterface Segregation Adaptive Code via C#: Agile coding with design ...
: Direct instantiation makes code rigid and untestable. Interfaces : These are the primary tool for decoupling. : The guide begins by establishing the "why" behind agile