Re: [Haskell]

Koji Nakahara argues that // should behave as follows (arr // cs1) // cs2 == arr // (cs1 ++ cs2) -- allow duplicate indices His argument that this is what his app (and, no doubt,m others) needs is quite convincing - it would be useful to have an operation that behaves this way. However, I think there's also a strong argument for having operations that reports an error given duplicate indices. Maybe we can have both sets of operations? This could be done either using two separate Array types or by having two variants of a few of the array ops. -- Alastair Reid haskell-consulting.com