"David E. Wheeler" <david@kineticode.com> writes:
> I actually like :> pretty well. It looks more like =>, and has nice correspondence to := for named function params.
Colon was removed from the set of allowed operator-name characters years
ago. There are conflicts with various usages (ecpg & psql variables).
This is actually a place where the current := behavior could cause some
issues, though I'm not aware of any at the moment.
regards, tom lane