Daniil Elovkov wrote:
I've recently asked some questions here about some little type hackery implementing an embedded dsl. But now I wonder if it's worth the effort at all...
Yes it is. Typed embedded DSL are quite useful and widely used. For example, Lava (high-level hardware description language) uses phantom types to prevent the designer from building meaningless circuits (e.g., connecting a Bool and an Int wires). http://citeseer.ist.psu.edu/69503.html There are other such hardware design languages which profitably use types (which ought to be popularized more). Using types can decrease the amount of error checking in the implementation. I highly recommend the following _very_ good thesis on this topic: Morten Rhiger Higher-Order Program Generation http://www.brics.dk/DS/01/4/index.html