ddd programming

///题意：/// A,B掷骰子，对于每一次点数大者胜，平为和，A先胜了m次A赢，B先胜了n次B赢。///p1表示a赢，p2表示b赢，p=1-p1-p2表示平局///a赢得概率 比一次p1 两次p0*p1 三次 p0^2*p1,即A赢的概率为p1+p*p1+p^2*p1+...p^n*p1,n->无穷///即a_win=p1/(1-p);b_win=p2/(1-p);///dp[i][j]表示a赢了j次，b赢了i次的概率///dp[i][j]=dp[i-1][j]*b_win+dp[i][j-1]*a_win;///ps:（两人的血量要换一换，数据错了）# include HDU 3076 ssworld vs DDD (probability DP)

Connection... [Architecture design] DDD Experience Sharing (Part 1) System Analysis stage (SA) In the system analysis phase, the main task is to propose a solution to the customer's needs and analyze the system architecture. Generally, UML configuration diagrams, Suite diagrams, and other tools are used to complete system analysis. Finally, we will organize the designed solution into a "System Requirement Specification 」. The system analysis stage i

Prerequisites: support for large systems, change of application system development ideas, and DDD practice (I) Starting with a large proportion of the structure, the system has been built. We all know that the demand is constantly changing and deepening, at the beginning, it was naturally a fuzzy large scale structure that had a preliminary understanding of the system to be carried out and clarified the requirements in the process of continuous refin

methods for these event sources We generally think of it as "behavior". An event source can have multiple types of event behaviors. For example, an order payment event source can have both email and SMS behaviors. Otherwise, an event processing method can also correspond to multiple event sources, such as an email action, which can simultaneously correspond to order payment And order delivery event sources, so domain events are very flexible in the project. 　/// /// 4. subscribe to

")] PublicresultentityBOOL>addproduct ([frombody] addproductspudto addproductspudto) {varresult =NewresultentityBOOL>(); //var productdbcontext =new productefcorecontext (); //var irepsotory = new Efcorerepository (productdbcontext); //var iproductrepsitory = new Productefcorerepository (productdbcontext); varProductdbcontext = servicelocator.getservice(); //the following new Unity.Resolution.ParameterOverrides () {{"Context", productdbcontext}}//{ } there is {} because it is

Openexpressapp uses the CSLA Library framework, the design of the class library can draw on the domain-driven design concept of DDD, this article introduces the concept of aggregation, understanding this concept can be clear management of the network between the class library, can reduce complexity of complex systems and improve maintainability. Polymerization A model will contain a large number of domain objects, regardless of how much is considere

variable, the program accesses the stack and requires read/write access to the stack area.> Each time a program enters or leaves a function, one or more accesses to the stack require a stack areahas read/write access rights. > Heap access occurs every time a program accesses a storage created by calling malloc () or new , and requiresread/write access rights. Each machine instruction executed by the > program is removed from the text area (or from the area of the dynamic Link code) and therefor

HDU 3076 ssworld vs ddd (probability DP), hdussworld Simple probability DP. Because the input order is reversed ,. Wrong N times .,, The Code is as follows: #include

I think the train of thought is correct. I have not found any mistakes. Please enlighten me. The Code is as follows: #include HDU 3076 ssworld vs DDD (probability DP)

Http://acm.hdu.edu.cn/showproblem.php? PID = 1, 3076 An incredible question: in short, the smaller the blood volume, the higher the odds, so the two exchanged the blood volume during reading. Obviously, the winning rate and negative rate of each round are fixed. Therefore, set PSC as the winning rate, pls as the negative rate, and peq as the flat rate, The winning rate and negative rate in each game can be determined, The odds and negatives in a stage with results are an infinite series. PSC (ne

ReadOnlyipersonrepository _personrepository; /// ///Auto-injection of constructor function/// /// PublicPersonservice (ipersonrepository personrepository) {_personrepository=personrepository; } Publicgetallpeopleoutput getpersons () {varPersons =_personrepository.getpersons (); //automatically convert list return NewGetallpeopleoutput {People= mapper.map(Persons)}; } }}7. Get the call in the WebCode:usingSYSTEM.WEB.MVC;usingfirstabp.people;namespac

business functions, you need to implement the entity approach rather than the domain service. When a business operation is done by a number of different entities, and the business flow is quite complex, let's say, if it has to be implemented by an entity method, but the caller needs to invoke multiple entity methods to complete the business operation, then this business operation needs to implement a business approach to the domain service. If the above two points are mixed, then it is

ArticleDirectory Aggregation Maintain data consistency and strengthen the invariant How do external objects reference internal objects? Variable root object Openexpressapp uses the csla Class Library Framework. When designing class libraries, you can use the domain-driven design concept of DDD. This article introduces the concept of aggregation, after understanding this concept, you can clearly understand the relationship betw

1. Business rules is a important part of the business domain. They define data validation and other constraints, need to being applied on domain objects in specific business process s Cenarios. Business rules typically fall into the following categories: Data validation Data transformation Business decision-making Process Routing (work-flow logic) 2. The context is very important in DDD world. Context specificity dictates (pr

) {Addfavoritesitem (Favoritesitem); } } }　　This allows you to reuse some of the guard operations in the Addfavoritesitem to ensure that the data is in the process of being validated when the historical data is removed from the DB after the business has been changed. This method can be timing used in any of the aggregation constructors.v. Conclusion　　The main point of this thesis is to think about the inertia of modeling, throw out the db, throw out the db, throw

. But sometimes you might want to save changes to the database in the middle of a work cell operation. In this case, you can inject Iunitofworkmanager and then call the IUnitOfWorkManager.Current.SaveChanges () method. Note: If the current unit of work is transactional, any changes in the transaction will be rolled back if an exception occurs, even if a saved change is made.VI. EventsThe unit of work has completed,failed and disposed events. You can register these events and then perform the req

want to debug, and you won't have to enter it later. Press again to exit Debug mode and cancel the Debug key mapping.With Vim's key mapping mechanism, you can map your favorite GDB commands to Vim's keys for more convenience. Examples of mappings can be referred to ~/.vim/macros/gdb_mappings.vim.Attach a screenshot, which is used putty telnet to Linux and debug in the terminal vim. That's why I like vimgdb because it can be debugged in the terminal vim, and clewn only supports Gvim: Because I d

Debugging in Linux is really a very troublesome thing, debugging with GDB is not convenient, not in windows with VS cool, the main reason is because GDB is the command line form, in fact, under Linux there are some GDB-based graphical debugging tools.1. kdbgUnder Ubuntu Direct sudo apt-get install kdbg can be installed.If the MNG error 11:function is invalid on this point after starting up; Chunk Mhdr; Subcode 0:0 error, then delete/usr/share/kde4/apps/kdbg/icons/hicolor/22x22/actions/pulse.mng

checked because the database does not contain model metadata." You can only check model compatibility for databases created with code first or code first migration. ”Migrating it in Visual Studio1.PM> Enable-migrations 2. Configuring the Automaticmigrationsenabled property of a configurationnamespacePMS. web.migrations{usingSystem; usingSystem.Data.Entity; usingSystem.Data.Entity.Migrations; usingSystem.Linq; Internal Sealed classConfiguration:dbmigrationsconfiguration { PublicCo

inconvenient.Cgdb and DDD are all based on GDB, and they just add an interface that's easier to interact with. Cgdb is also used in the command line, using the same way as GDB, just added the code display interface.DDD is also developed by GNU, and he is based on GDB, but uses a visual interface that is easier to operate than cgdb.In some cases, I may not have x-sever on Linux, so there is no graphical display, and we can only use the Debug tool with