16 May
2003
16 May
'03
10:21 a.m.
data D1 = A | B data D2 = A2 | B2 | C2
data D3 = D !D1 !D2 -- could fit inside e.g. a Word8?
Is there an elegant way to achieve this manually (if I know I'll need large arrays of D3s, for instance -- can I map them to arrays of Word8 or a similar type?)
Sure. Write an instance of IOUArray which knows how to pack them :).