What does the following formalism mean?

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The discussion centers on the interpretation of a formalism related to programming languages, specifically focusing on the definition of a method or function. The body of the method is identified as potentially containing variable assignments or the results of method calls. Further clarification is required for the other components of the formalism that were not understood by the participants. This highlights the importance of context in understanding programming constructs.

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Hi, could you please explain to me what does the following formalisms mean?

View attachment 2414

i'm interested in the body part.

Thank you in advance.
 

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Hi, and welcome to MHB!

It looks like a formal definition of some programming language. This part shows what a method, or a function, is. The body may contain an assignment of a variable to a variable or of the result of a method call to a variable. The other two options I did not really understand; more context is needed.
 

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