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Formalising Flow Typing with Union, Intersection and Negation Types

The Whiley language takes an unusual approaching to static typing called flow typing.  This helps to give Whiley the look-and-feel of a dynamically typed language.  The key idea behind flow typing is to allow variables to have different types at different points in a program.  For example, consider the following code written in a . . . → Read More: Formalising Flow Typing with Union, Intersection and Negation Types