Copperbox revision 2806.
I've added a PostScript symbol constructor to the expression type. Although I don't think PostScript has symbols a la Lisp, it does have opaque defs for font names - this is the use-case that the symbols will model.
Otherwise, I've come a bit unstuck with alpha renaming and VarId's. The current code represents function names with a PrimId that is oblivious to alpha renaming, but the expression syntax doesn't allow me to access a PrimId when it is needed for application.
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About Me
- Stephen Tetley
- Disambiguating biog as there are a few Stephen Tetley's in the world. I'm neither a cage fighter or yachtsman. I studied Fine Art in the nineties (foundation Bradford 1992, degree Cheltenham 1992 - 95) then Computing part-time at Leeds Met graduating in 2003. I'm the Stephen Tetley on Haskell Cafe and Stackoverflow.