In a language that features recursion, it is necessary to distinguish between the definition of a function and a call to that function. The definition of a function defines how that function behaves. A call to the function creates an "instance" or "activation" of that function. Although a function has only one definition, over time it will have many distinct instances.
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Function-Call-And-Return.pdf (Size: 99.97 KB / Downloads: 341)