Keboaja

Hi All.. Now i would explain about Nesting In F# programing system Function and variable definitions can be structured hierarchically within an F# program, allowing some definitions to be globally visible, others to be defined separately in distinct portions of the hierarchy, others to be visible only within a single branch of the hierarchy and others to be refined, specialising them within the hierarchy. Compared to writing a program as a flat list of function and variable definitions, structuring a program into a hierarchy of definitions allows the number of dependencies within the program to be managed as the size and complexity of the programs grows. This is achieved most simply by nesting definitions. Thus, nesting is the simplest approach to the structuring of programss. For example, the ipow3 function defined in the previous chapter contains a nested definition of a function sqr: > let ipow3 x = let sqr x = x * x x * sqr x;; val ipow3 : int -> ...