Re^2: Using hashes for set operations...

well this my %intersection = grep $set1{$_}, keys %set2; is wrong, you're assigning a list of keys to a hash.

and you missed so many points from my post that I assume that you only read the headings... or how do you want to intersect sets of objects like this?

Cheers Rolf

Comment on Re^2: Using hashes for set operations... Download Code

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Re^3: Using hashes for set operations... by John M. Dlugosz (Monsignor) on May 21, 2011 at 19:08 UTC
and [he] missed so many points from my post that I assume that you only read the headings I've noticed a trend for quantity at the expense of quality, in general.	[reply]
Re^4: Using hashes for set operations... by ikegami (Patriarch) on May 22, 2011 at 05:35 UTC
Answering the replies to my posts has been taking a lot out of me, and taking a lot of time away from my other answers.	[reply]
Re^5: Using hashes for set operations... by John M. Dlugosz (Monsignor) on May 22, 2011 at 14:00 UTC
Maybe you need a vacation. Spend some time on the beach, or the slopes, as your interests may lie.	[reply]
Re^6: Using hashes for set operations... by ikegami (Patriarch) on May 22, 2011 at 15:22 UTC
Re^5: Using hashes for set operations... by educated_foo (Vicar) on May 22, 2011 at 21:07 UTC
Answering the replies to my posts has been taking a lot out of me First, not all replies require answers (this one doesn't, for example). Second, you don't always have to get in the last word. Every discussion has to end at some point.	[reply]
Re^5: Using hashes for set operations... by Anonymous Monk on May 23, 2011 at 08:17 UTC
If you don't have time to do new subjects justice, don't reply at all.	[reply]
Re^3: Using hashes for set operations... by ikegami (Patriarch) on May 22, 2011 at 05:18 UTC
Sorry, missing `map { $_ => 1 }` `my %set1 = map { $_ => 1 } @array1; my %set2 = map { $_ => 1 } @array2; my %intersection = map { $_ => 1 } grep $set1{$_}, keys %set2;` [download] and you missed so many points from my post that I assume that you only read the headings.. Are you trying to imply that I should have told you you need to use a hash to get the original from the stringification even you already know that? Or are you referring to request to avoid loops? Yeah, I missed that bit of nonsense. It's impossible to find the intersection of two sets without looping over the two sets.	[reply] [d/l] [select]