agile principles patterns and practices in c#

to change.Translate into natural language description: If the coin event is received in the locked state, it is migrated to the unlocked state and the unlock function is called. If the pass event is received in the unlocked state, it is migrated to the locked state and the lock function is called. If the coin event is received in the unlocked state, it remains in the unlocked state and calls the Thankyou function. If the pass event is received in the locked state, it remain

"slices of bread". These slices of bread are the raw data to be analyzed. The analysis program "bakes" these slices and is thus referred to as "toasters". We refer to the individual variables in the data block as "breadcrumbs". In short, it is a useful and interesting metaphor.Of course, metaphor is more than just a name system. Metaphor is the vision of a system that guides all developers in choosing the right name, putting the function in the right place, creating new and appropriate classes

their own estimates and measured by themselves. Developers choose to feel comfortable with their tasks and maintain high quality of work.Managers always get data at each iteration. They use this data to control and manage projects. They don't have to impose, threaten, or plead with developers to express arbitrary, unrealistic goals.It sounds like a nice, relaxing thing, but it's not. Using the data generated by the stakeholders is not always satisfactory, especially when it is just beginning. T

and cannot be overused. If a class has hundreds of different interfaces, some of which are separated according to the client program, others are separated by version, then the class is hard to figure out, and this kind of hard-thinking is very frightening.12.5 ConclusionFat classes can cause unhealthy and harmful coupling relationships between their client programs. When a client program asks for a change to the Fat class, it affects all other client programs. Therefore, client programs should

. A real software architect is involved in the code that he or she designs. 14.5 ConclusionUML is a tool, not the end result. As a tool, it can help you to think and communicate the design. If you use it sparingly, it will bring you great benefits. If used excessively, it will waste you a lot of time. When using UML, less is better.Excerpt from: "Agile Software Development: principles, patterns and

following code: Public class base{ publicvirtualvoid f () {/*some code* / }}publicclass derived:base{ publicoverride void f () {}}The function f is implemented in base. However, in derived, the function f is degenerate. Perhaps, derived programmers think that function f is useless in derived. Unfortunately, base users do not know that they should not call F, so there is a substitution violation.The existence of degenerate functions in degenerate classes does not always mean that the LS

run, the faster you will find any deviations from those tests. If you can run all the tests multiple times a day, the system will not expire for more than a few minutes. This is a reasonable goal. We will never allow the system to regress. Once it is working at a specific level, it must not be reversed to a slightly lower level.However, validation is only one of the benefits of writing tests. Both unit and acceptance tests are a form of documentation. Such a document can be compiled and execute

classshapecomparer:icomparer{Private StaticHashtable priorities =NewHashtable (); StaticShapecomparer () {priorities. ADD (typeof(Circle),1); Priorities. ADD (typeof(Square),2); } Private intpriorityfor (Type type) {if(priorities. Contains (type))return(int) Priorities[type]; Else return 0; } Public intCompare (ObjectO1,ObjectO2) { intPriority1 =priorityfor (O1. GetType ()); intPriority2 =priorityfor (O2. GetType ()); returnPriority1.compareto (Priority2);

has a separate internal thread called the active object. They appear as bold borders, as follows:18.2.6 sending a message to an interfaceExamples are as follows:Send a message to its derived type through an interface:18.3 ConclusionA sequence diagram is a tool. To be used in accordance with its design intent. Use them in front of the whiteboard to communicate with others in real time. Use them in short documents to record those core, important collaborations in the system.In the case of sequenc