Add comment about arity
authorsimonpj@microsoft.com <unknown>
Wed, 18 Oct 2006 11:24:18 +0000 (11:24 +0000)
committersimonpj@microsoft.com <unknown>
Wed, 18 Oct 2006 11:24:18 +0000 (11:24 +0000)
commit5e41a5afcc39480f4e60055843a5e4106b6f8875
tree84fb62af2d83be00e18ff9adfa2461506174146c
parent1ee8a6f6cf3c06e3651438720333612a70348091
Add comment about arity

I'm not sure what the significance of the "arity" of a primtive
TyCon is.  They aren't necessarily saturated, so it's not that.

I rather think that arity is only relevant for
SynTyCon
AlgTyCon
CoercionTyCon

This comment (and commit message) is just an aide memoire.
compiler/types/TyCon.lhs