Command Pattern
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The Command Design Pattern encapsulates requests as objects so that different requests can be handled uniformly. A Command defines an interface for executing an operation but delegates the responsibility of performing the operation to an associated receiver object. This allows requests to be parameterized with different receivers, queued or executed at a later time, and supported by undo/redo operations through command history.
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Command Pattern
The Command Pattern encapsulates requests as objects, allowing clients to parameterize requests and supporting undoable operations. It decouples the invoker of a request from the implementation of the request, making it possible to queue, log, and execute requests at different times. Some benefits include flexibility in specifying, queueing, and executing requests, as well as supporting undo functionality. Some potential liabilities include efficiency losses and an excessive number of command classes.
Model View Command Pattern
The document discusses the Command pattern and how it compares to the Controller pattern. It explains that a Command represents the next action to invoke, while a Controller contains methods for particular operations. The document also describes how to use Next as a bindable property or action set to modify data or scope properties. It provides examples of binding commands conditionally and arrays of action sets. Overall, the Command pattern separates logic into individual commands that can be executed as a chain to perform operations.
Command Design Pattern
The Command design pattern encapsulates requests as objects, allowing for the parameterization of clients with different requests, queues of requests, and undo functionality. It decouples the invoker of a request from the receiver that performs it. Some key elements are the Command interface that declares an execute method, ConcreteCommand classes that link Receivers to their actions, and an Invoker that asks Commands to carry out requests. The pattern supports adding new commands without changing existing code but can lead to many command classes cluttering the design. It is used when objects need to issue parameterized requests without coupling to receivers or timing of requests.
Command pattern
The Command pattern encapsulates requests as objects, allowing clients to parameterize other objects with different requests, queue or log requests, and support undoable operations. It decouples the object that invokes the operation from the one that knows how to perform it. ConcreteCommand classes define a binding between a receiver object and an action, implementing Execute to invoke operations on the receiver. The pattern makes it easy to add new commands without changing existing classes.
Command Design Pattern
The Command pattern encapsulates a request as an object, allowing requests to be parameterized with different objects and queued or logged. A command object represents the method call and stores the method name, owner object, and parameters. A client creates a concrete command object and passes it to an invoker, which stores the command and calls its execute method, invoking the action on the receiver object. This decouples the requestor from the performer and allows invokers to be parameterized with different commands at runtime.
Design patterns - Singleton&Command
The document discusses two design patterns: Singleton and Command.
The Command pattern encapsulates requests as objects, allowing requests to be parameterized and queued. This decouples object requests from their execution and receipt. The pattern uses command objects that implement a generic command interface to execute operations on receiver objects.
The Singleton pattern ensures that only one instance of a class exists and provides a global access point to it. It controls instantiation by keeping track of the sole instance and providing a global access method. This pattern is useful when exactly one object is needed to coordinate actions across a system.
Command Design Pattern
The document discusses the Command design pattern, which encapsulates requests as objects so that different requests can be parameterized, queued, logged, or made undoable. The pattern addresses the need to issue requests without knowing the operation or receiver. A command defines an interface for executing an operation, concrete commands bind a receiver to an action, and a client creates concrete commands while an invoker carries out the request.
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Command Pattern
The Command Pattern encapsulates requests as objects, allowing clients to parameterize requests and supporting undoable operations. It decouples the invoker of a request from the implementation of the request, making it possible to queue, log, and execute requests at different times. Some benefits include flexibility in specifying, queueing, and executing requests, as well as supporting undo functionality. Some potential liabilities include efficiency losses and an excessive number of command classes.
Model View Command Pattern
The document discusses the Command pattern and how it compares to the Controller pattern. It explains that a Command represents the next action to invoke, while a Controller contains methods for particular operations. The document also describes how to use Next as a bindable property or action set to modify data or scope properties. It provides examples of binding commands conditionally and arrays of action sets. Overall, the Command pattern separates logic into individual commands that can be executed as a chain to perform operations.
Command Design Pattern
The Command design pattern encapsulates requests as objects, allowing for the parameterization of clients with different requests, queues of requests, and undo functionality. It decouples the invoker of a request from the receiver that performs it. Some key elements are the Command interface that declares an execute method, ConcreteCommand classes that link Receivers to their actions, and an Invoker that asks Commands to carry out requests. The pattern supports adding new commands without changing existing code but can lead to many command classes cluttering the design. It is used when objects need to issue parameterized requests without coupling to receivers or timing of requests.
Command pattern
The Command pattern encapsulates requests as objects, allowing clients to parameterize other objects with different requests, queue or log requests, and support undoable operations. It decouples the object that invokes the operation from the one that knows how to perform it. ConcreteCommand classes define a binding between a receiver object and an action, implementing Execute to invoke operations on the receiver. The pattern makes it easy to add new commands without changing existing classes.
Command Design Pattern
The Command pattern encapsulates a request as an object, allowing requests to be parameterized with different objects and queued or logged. A command object represents the method call and stores the method name, owner object, and parameters. A client creates a concrete command object and passes it to an invoker, which stores the command and calls its execute method, invoking the action on the receiver object. This decouples the requestor from the performer and allows invokers to be parameterized with different commands at runtime.
Design patterns - Singleton&Command
The document discusses two design patterns: Singleton and Command.
The Command pattern encapsulates requests as objects, allowing requests to be parameterized and queued. This decouples object requests from their execution and receipt. The pattern uses command objects that implement a generic command interface to execute operations on receiver objects.
The Singleton pattern ensures that only one instance of a class exists and provides a global access point to it. It controls instantiation by keeping track of the sole instance and providing a global access method. This pattern is useful when exactly one object is needed to coordinate actions across a system.
Command Design Pattern
The document discusses the Command design pattern, which encapsulates requests as objects so that different requests can be parameterized, queued, logged, or made undoable. The pattern addresses the need to issue requests without knowing the operation or receiver. A command defines an interface for executing an operation, concrete commands bind a receiver to an action, and a client creates concrete commands while an invoker carries out the request.
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- The goal is to explain the basic structure and capabilities of PL/SQL to allow for more complex programming within Oracle databases.
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For the full video of this presentation, please visit: https://www.edge-ai-vision.com/2024/06/building-and-scaling-ai-applications-with-the-nx-ai-manager-a-presentation-from-network-optix/
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In this presentation, van Emden covers the basics of scaling edge AI solutions using the Nx tool kit. He emphasizes the process of developing AI models and deploying them globally. He also showcases the conversion of AI models and the creation of effective edge AI pipelines, with a focus on pre-processing, model conversion, selecting the appropriate inference engine for the target hardware and post-processing.
van Emden shows how Nx can simplify the developer’s life and facilitate a rapid transition from concept to production-ready applications.He provides valuable insights into developing scalable and efficient edge AI solutions, with a strong focus on practical implementation.Recently uploaded (20)
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Command Pattern
- 1. Command Design Pattern (Action, Transaction)
- 2. Outline Intent & Motivation Structure Applicability & Implementation Examples
- 3. Intent & Motivation Encapsulate a request as an object Issue requests without knowing operation eg. Button & MenuItem in a toolkit
- 4. Basic Structure abstract Command class to define interface Concrete implementation links command to receiver
- 5. Structure
- 6. Applicability & Consequences Decouple invoker and receiver Link same command to multiple invokers MacroCommand: chain commands together Undo/Redo: store state and reversal
- 7. Implementation Command intelligence State Information Receiver, Arguments, Original Values, Copy Command Binding Only No Separate Receiver
- 8. Example…