Bill Barker a écrit :
> I've been working on a SparseRealVector that implements RealVector but is
> backed by OpenIntToDoubleHashMap. Unlike SparseRealMatrix, the goal is more
> speed than space. Mostly it is going well, but running into a few problems
> where some RealVector methods are almost nonsensical for sparse vectors
> (e.g. mapInvToSelf).
>
> Since the default value of OpenIntToDoubleHashMap is final, this means that
> I currently have to replace the map in this case (so it really isn't 'self'
> afterwards). So what i'm asking is if it is better to have the default
> value mutable or to allow the backing to be replaced in a "*ToSelf" method.
I suppose you are speaking about the missingEntries field of
OpenIntToDoubleHashMap ? I would prefer this field remains final. The
*ToSelf methods on the other hand really imply values can change, so
changing the underlying backing store seems fair.
Luc
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