2 types of inheritance: as a way of combining types: to specify "this is like that except" dynamic organization of behavior Problems with Inheritance Inheritance is coupling. All entities involved in inheritance are coupled together (child, pare...
Decoupled code is easy to change code. This is because the code that is linked needs to be changed in parallel. Decoupled code is reusable code. When writing reusable code, you put it into a function/method call, you give it clean interfaces. Reusabl...
Program Correctness = program that does only what it is expected to do (no more or less). Reasoning for this is that a program cannot do everything Programm correctness is defined by its roles and responsibilities. The concept is based on the metapho...
Don't Panic Carve out the scenario of the bug Gather all hard facts about the behavior of the bug and not make assumptions about it. Try to define the scope of the bug to be as precise as possible. Take the gathered hard facts and use them to cons...
Geometry: 2 lines are orthogonal if they meet at a right angle (90 deg). But the lines are independent. Computing: 2 parts of a system are orthogonal if changes in one do not affect the other. Other words for orthogonal are modular, layered, compone...
Tracer Bullets Context The end goal of the project is not set (WIP). Advantages get immediate feedback on a project under real conditions users get to see something working early developers build a structure to work in that they can iterate over ...
