On 10/6/11 2:12 PM, Eli Barzilay wrote:
Sam is talking about building the ASTs *while* matching, which is what Jay was trying to do with uses of `app'. I think that a teaching context is in particular one where such a thing doesn't fit -- it obscures the distinction between the side the sexpr goes into, and the side where an AST comes out.
Okay, I see the distinction, and I apologize for not having fully understood Jay's example. I agree that this obscurity is hazardous. I think, though, that I have always assumed left-to-right matching, though I may never have constructed anything that would break if it didn't happen. --PR
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