FYI, Cayenne used the center dot as composition. See the System$HO module.
http://www.cs.chalmers.se/~augustss/cayenne/system.html
I remember liking it but I think the ring operator would be closer to
mathematics notation and indeed the best choice.
Cheers,
/Josef
On 3/25/06, Dylan Thurston
At http://hackage.haskell.org/trac/haskell-prime/wiki/CompositionAsDot , there is a list of possible Unicode replacements for the '.' operator. Oddly, the canonical one is missing (from http://www.unicode.org/charts/PDF/U2200.pdf ):
2218 RING OPERATOR = composite function = APL jot 00B0 degree sign 25E6 white bullet
I don't think any other Unicode character should be considered.
(Is this the approved way to send minor updates like this?)
Peace, Dylan Thurston
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