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Out in the real world (and I use this phrase only because the question is about the criticism of functional programming being useless) a functional language that is used often is SQL. I have seen too many reasonable developers that are unable to grasp how to use SQL effectively because they can only think iteratively and not “functionally”. I have seen way ...


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It seems to me that your students are asking for external validation: they want evidence that other people (the industry) value what you are teaching. For these students abstract claims such as "This will help you write better non functional code" or "you might need it in the future" usually do not suffice. Toy examples such as computing array/string length ...


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