What is a Namespace?

A namespace is a scope, not even a glorified scope, just a plain scope assigned to a variable. What are the uses of namespaces? Namespaces are useful to avoid cluttering the parent scope and can be used where a class is not applicable. Some examples of namespace usage in the standard library includes:

  • Math, which stores constants and useful functions
  • IO, which stores I/O functions and constants

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