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Function is a block of code which performs a specific task.
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Solving the problems that come with the dyadic function assertEquals(expected, actual)
In chapter 3 (functions) there is a section on dyadic functions. Here is an excerpt from the book.
Even obvious dyadic functions like assertEquals(expected, actual) are problematic. … However the book does not go on to say a sensible fix for functions such as assertEquals. I cannot think of a fix for assertEquals or for functions I often come across like the one described above. …