(ar0n) Re (2): How to test equality of hashes?

PS If anyone can tell me how to get this hash-flattened-into-an-array behaviour without a sub, I'd be interested. I've been fiddling around with the syntax trying to get that.

if ( "@{[%hash1]}" eq "@{[$hash2]}" ) {
    # foo ...
}
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Re: (ar0n) Re (2): How to test equality of hashes? by aufflick (Deacon) on Sep 14, 2004 at 06:42 UTC
None of these repsonses sort the array. I would have thought that this solution would be flakey unsorted since hashs can come out in any order they please... I do flattening for comparison by shoving a hashref into an array ( `@foo = %{$foo}` ) and then sorting the array ( `@foo = sort @foo` ) and flattening that into a string.,p> The obvious problem with this is that if you have a hash where the keys/values were transposed then it would still appear equal. Similar situations will occur with other data anomolies. Not a problem in my case, but worth remembering.	[reply]

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Re: (ar0n) Re (2): How to test equality of hashes?
by aufflick (Deacon) on Sep 14, 2004 at 06:42 UTC

I do flattening for comparison by shoving a hashref into an array ( @foo = %{$foo} ) and then sorting the array ( @foo = sort @foo ) and flattening that into a string.,p> The obvious problem with this is that if you have a hash where the keys/values were transposed then it would still appear equal. Similar situations will occur with other data anomolies.

Not a problem in my case, but worth remembering.

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