Operator - ReactiveX - Reactive Extension C#

Описание: Operators
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Operators are the method that can perform by Observable. We are using C# programming language so it has own interface IObservable but I want to use our custom one for our learning state.
C# has Linq which is fully extended with observable so that is the reason if we use Observable from System then all the items will be extended automatically.
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Custom Operators
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So First we will create extension method for extending the features of observable.
If we need any kind of Linq operator then we can take Func as parameter.
We also can call Observer to extension method if we need this.
Finally we can call that Operator with our Observable instance.

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Programming Tutorial By Ashiqur Rahman Emran.