Outrageous but meaningful coincidences: dependent type-safe syntax and evaluation

  title={Outrageous but meaningful coincidences: dependent type-safe syntax and evaluation},
  author={Conor McBride},
Tagless interpreters for well-typed terms in some object language are a standard example of the power and benefit of precise indexing in types, whether with dependent types, or generalized algebraic datatypes. The key is to reflect object language types as indices (however they may be constituted) for the term datatype in the host language, so that host type coincidence ensures object type coincidence. Whilst this technique is widespread for simply typed object languages, dependent types have… CONTINUE READING
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