Which itself can be reduced to %a = (%a, %b);. Granted if you wanted to preserve the elements of either hash, you would have to use the above method. I presume the behavior is undefined, but on my machine:

%a = (%a, %b);  # common elements contain %b's values
%a = (%b, %a);  # common elements contain %a's values

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In reply to Re^2: Hash merging! by eibwen
in thread Hash merging! by jerry.hone

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