Interesting, I just noticed I can do (define foo identity), however I cannot define a method like this. (class object% (super-new) (define/public foo identity)) complains that this is a bad form for method definition. Why is this?

Looks like (define/public ...) has a (reasonably?) strict definition of what might constitute a method? I’m unfamiliar with the identity identifier - is it a synonym for (lambda (i) i)?

@lexi.lambda I would think taking that code as a starting position is a good idea, but trusting it to be complete or correct is not

Is there any particular place discussing the AdventofCode2017 puzzles (and completing in racket)?

I think Matthew Butterick is doing them in Racket, you can see his code on GitHub

oh cool, thanks

wow, some of that looks really nice

I’m working on Advent as well

How to specify a free-id=? in syntax-parse as in syntax-case*? I wish to supply something like (free-identifier=? a b ph 0)

the #:phase option will compare the literals as if it is (free-identifier=? a b ph ph) right?

@shu—hung huh, I didn’t know syntax-case* existed

my wildly speculative guess is you could make a syntax class

thanks, let me check that

Oh, maybe #:phase will just be okay. I’m applying syntax-parse to syntax objects that are expanded, so the relevant bindings should be there

That’s what I expected identity to be.