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I really can't see the difference between them. They are both about data flowing through instructions and the propagation of changes in the input data. I've read this book (authored by Matt Carcki) and it clearly says that they are both the same. On the other hand, the wikipedia establishes Reactive programming as a form of Dataflow programming and this StackOverflow answer does it too.
So, what is the conceptual difference between Reactive programming and Dataflow programming?
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Reactive programming is generally event-driven, in contrast to reactive systems, which are message-driven—the distinction between event-driven and message-driven is clarified later in this article.
Dataflow programming (DFP) is a programming paradigm where program execution is conceptualized as data flowing through a series of operations or transformations. Each operation may be represented as a node in a graph. Nodes are connected by directed arcs through which data flows.
Reactive programming describes a design paradigm that relies on asynchronous programming logic to handle real-time updates to otherwise static content. It provides an efficient means -- the use of automated data streams -- to handle data updates to content whenever a user makes an inquiry.
The DFG may be regarded as a representation of the machine-language program of a data flow computer. A data flow graph consists of a number of nodes called actors or operators connected by directed arcs or links.
Reactive Programming is a form of Dataflow programming only. But its also a paradigm which is oriented around propagation of changes along with data flows
Like a example given on Wiki Page
a:=b+c would mean that a is being assigned the result of b + c, in the instant the expression is evaluated, and later, the values of b and c can be changed with no effect on the value of a. However, in reactive programming, the value of a would be automatically updated whenever the values of b and c change, without the program executing the sentence a := b + c again.
Which is the main difference between two of them. It binds the variables with expression and system reacts upon the changes in variable without running the expressions again and again.
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