Tag: coding

SOLID Principles

May 15, 2020

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What is SOLID job Interface Segregation (ISP) The first of the solid design principles and perhaps the most useful is the interface segregation principle. The interface segregation principle says no client should be forced to depend on methods it does not use.A client should depend on the smallest set of interface features: the fewest method and attributes. The wrap vs. extend decision Object-oriented design always involves making the wrap versus extend…

OOP Examples in C#

May 14, 2020

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Inheritance or Composition: Two approaches Inheritance Composition IEnumerable IDisposable IEnumerable and Yield Use StreamReader Base Class

Convert Design to Code

May 12, 2020

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You can see some sample here from different oop languages: When we write the class for a spaceship in our video game, we’re creating the blueprint to build the spaceship. Now, the blueprint itself isn’t a usable object, but from that class, we can instantiate or create one or more instances of that type of spaceship object. And to do that, many object-oriented languages use the keyword new. In Java, we’d say Spaceship then the variable name myShip equals…

Async Programming

Concurrent Collections

May 5, 2020

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Remember the idea of thread safe, having to do extra work to make sure that two different threads don’t run the same code at the same time if that code access shared state. Well, concurrent collections take of that for you to a significant degree. It’s not perfect, but it’ll go a long way to writing code where one thread safely talks to another thread through shared state, shared collections, and so these collections are designed to be used concurrently, to…

Async Programming

Delegates & Async Programming (.NETFramework)

May 1, 2020

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Delegates have been available since the start of C# and actually offer us the first and easiest way into asynchronous programming. There is a keyword in C# named delegate which compiler will actually generate an entire class. First assume this simple calling delegate and see the result: The C# compiler based on delegate keyword generate a whole class that will be our type-safe means of having a function pointer. in…

Async Programming

Task-Based Asynchronous Pattern (TAP)

April 29, 2020

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Returns Task or Task<TResult> Use Async suffix in methods Overloaded to accept cancelation token

Async Programming

PLINQ

April 29, 2020

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PLINQ, or Parallel LINQ when is deduced to automate parallelization. As you might have already guessed that it is parallelization using the same linq queries that we are used to. Except is all we do is say dot as parallel and then that query could run AsParallel query. If we were to execute a certain operation in parallel, we would need to partition the work into tasks, execute those tasks on multiple different threads, and then combine the results. The good…

Async Programming

Task Parallel Library (TPL)

April 29, 2020

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The task parallel library (TPL) is a set of public types and APIs.The vision behind the TPL is for the developers to be able to maximize the performance of code while not having to worry about the nitty gritties of threading. TPL makes us productive by Simplifying the process of adding parallelism and concurrency to applications. Scaling the degree of concurrency dynamically. Handling partitioning of the work . Scheduling threads…

Async Programming

Thread Signaling

April 28, 2020

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.NET Framework built-in static methods are thread safe.When creating static methods, it is a best practice to make them thread safe. Thread Affinity Thread that instantiate an object is the only thread that is allowed to access its members. (Like WPF UI thread)One of the advantages of having thread affinity is that we may not need to use a lock to use instantiated object, since no other thread can access…

Async Programming

Synchronization

April 27, 2020

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Exclusive Locks lock(someObject){}Allow only one thread to access a certain section of code. unless and until the thread has not finished executing that code, no other thread will be able to enter.Alternative is to use Monitor.Enter/Monitor.Exit it’s only syntactical difference. behind the scenes, they have the same exact implementation. Two types of exclusive locks Lock Mutex If we give a name to a mutex , that mutex would be accessible…