[racket-dev] member like assoc

From: Asumu Takikawa (asumu at ccs.neu.edu)
Date: Fri May 31 19:40:52 EDT 2013

Hi all,

Is it feasible to get `member` to have the same optional argument
behavior as `assoc`? That is, to have an equality predicate as the third

I find myself writing the (imaginary) equivalent of things like:
  (member id some-list free-identifier=?)

and it seems like it would be nicer with an extra `member` argument than
with `memf`.


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