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  2. Sequence diagram - Wikipedia

    en.wikipedia.org/wiki/Sequence_diagram

    The diagram emphasizes events that cross the system boundary from actors to systems. A system sequence diagram should be done for the main success scenario of the use case, and frequent or complex alternative scenarios. There are two kinds of sequence diagrams: Sequence Diagram (SD): A regular version of sequence diagram describes how the ...

  3. Bridge pattern - Wikipedia

    en.wikipedia.org/wiki/Bridge_pattern

    Bridge pattern. The bridge pattern is a design pattern used in software engineering that is meant to "decouple an abstraction from its implementation so that the two can vary independently", introduced by the Gang of Four. [1] The bridge uses encapsulation, aggregation, and can use inheritance to separate responsibilities into different classes.

  4. Fibonacci sequence - Wikipedia

    en.wikipedia.org/wiki/Fibonacci_sequence

    Fibonacci sequence. In mathematics, the Fibonacci sequence is a sequence in which each number is the sum of the two preceding ones. Numbers that are part of the Fibonacci sequence are known as Fibonacci numbers, commonly denoted Fn . The sequence commonly starts from 0 and 1, although some authors start the sequence from 1 and 1 or sometimes ...

  5. Geometric progression - Wikipedia

    en.wikipedia.org/wiki/Geometric_progression

    The first block is a unit block and the dashed line represents the infinite sum of the sequence, a number that it will forever approach but never touch: 2, 3/2, and 4/3 respectively. A geometric progression, also known as a geometric sequence, is a mathematical sequence of non-zero numbers where each term after the first is found by multiplying ...

  6. Unified Modeling Language - Wikipedia

    en.wikipedia.org/wiki/Unified_Modeling_Language

    The diagram would have actors on the left side, with arrows indicating the sequence of actions and interactions between systems and actors as described please Sequence diagram drow Sequence diagrams should be drawn for each use case to show how different objects interact with each other to achieve the functionality of the use case.

  7. Strategy pattern - Wikipedia

    en.wikipedia.org/wiki/Strategy_pattern

    A sample UML class and sequence diagram for the Strategy design pattern. [4]In the above UML class diagram, the Context class does not implement an algorithm directly. . Instead, Context refers to the Strategy interface for performing an algorithm (strategy.algorithm()), which makes Context independent of how an algorithm is impl

  8. Chain-of-responsibility pattern - Wikipedia

    en.wikipedia.org/wiki/Chain-of-responsibility...

    The UML sequence diagram shows the run-time interactions: In this example, the Sender object calls handleRequest() on the receiver1 object (of type Handler). The receiver1 forwards the request to receiver2, which in turn forwards the request to receiver3, which handles (performs) the request.

  9. Memento pattern - Wikipedia

    en.wikipedia.org/wiki/Memento_pattern

    Memento pattern. The memento pattern is a software design pattern that exposes the private internal state of an object. One example of how this can be used is to restore an object to its previous state (undo via rollback), another is versioning, another is custom serialization. The memento pattern is implemented with three objects: the ...

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