If you take your hashes to actually be matrixes to be added, then you can also think of some other solutions representing them instead as arrays of arrays. The only issue here is that this is not an efficient representation of the data if your matrixes end up being sparse.

In reply to Re: Merging two hashes, keeping keys unique but adding values if necessary by perlfan
in thread Merging two hashes, keeping keys unique but adding values if necessary by Majestic

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