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by catnaroek 2829 days ago
Calling HLists “collections” is misleading. In spite of their name, HLists are actually record types. The only actual list involved is a compile-time list of component types used to form a record type.

To give a perhaps odious but relatable analogy, a form is a list of questions, but a filled form is not a list of answers - it is a record of answers to the questions in the form.