>From a previous email in the beginners list I more or less understood that the monomorphism restriction will not exist anymore in Haskell Prime.
Is this correct? On Fri, Mar 27, 2009 at 10:32 PM, Jonathan Cast <jonathancc...@fastmail.fm>wrote: > On Fri, 2009-03-27 at 14:26 -0700, Kirk Martinez wrote: > > Your powersOfTwo function, since it gets memoized automatically (is > > this the case for all functions of zero arguments?), > > It is the case for all functions which have zero arguments *at the time > they are presented to the code generator*. The infamous evil > monomorphism restriction arises from the fact that overloaded > expressions, such as > > negative_one = exp(pi * sqrt(-1)) > > look like functions of zero arguments, but are not, and hence do not get > memoized. This behavior was considered sufficiently surprising, when it > was discovered in early Haskell compilers, that the construct was > outlawed from the language entirely. > > jcc > > > _______________________________________________ > Haskell-Cafe mailing list > Haskell-Cafe@haskell.org > http://www.haskell.org/mailman/listinfo/haskell-cafe >
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