Dear Mr. Mechveliani,
> I thought efficient arrays are impossible in functional language.
I'm not sharing this thought...
Here is a quote from the Haskell Library Report:
\begin{quote}
``Haskell provides indexable arrays, which may be thought of as functions
whose domains are isomorphic to contiguous subsets of the integers.
Functions restricted in this way can be implemented efficiently;
in particular, a programmer may reasonably expect rapid access to the
components.''
\end{quote}
> So we have to organise the data so that to avoid the access by index
> - as possible.
Sure. If possible - ok.
Regards,
Jan
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