22 Apr
2013
22 Apr
'13
3:32 a.m.
Is the following really supposed to be acceptable? Both Poly/ML and mlton accept it without complaining:
datatype '+ = C | D;
(Moscow ML rejects it. mlton and Poly/ML treat it as the declaration of a unary type operator called +.)
and what about
datatype '' foo = C | D;
Michael