Whew... This is intense.

I'm sorry, but I've tried, and read some articles on hashes/data structures, but still need some assistance understanding this.

I get the map statement. But: 

$unique_descriptive{$num}{count}++;
   push @{$unique_descriptive{$num}{values}}, $num;

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Is a little confusing.

Here's what I got so far: The first statement increments the value of "count"(which I guess is a new key made then and there?). The value is in the HoH %unique_descriptive, at the key: That is the number, which is the element of the de-referenced array being looped through.

Then the 2nd line is AoHoH?? But that array is never used later? The keys of the most inner hash are the values of something(what?). The end value of this is the number from the loop being pushed in. The 2nd inner hash is at the key of $num. Was the @ in front only necessary b/c push takes list context?

Then the other problem is:

my @sorted_keys = sort{ $unique_descriptive{$a}{count} <=> $unique_des
+criptive{$b}{count} 
                                                        or
                                                     $a <=> $b
                      }keys %unique_descriptive;

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The numbers are being sorted based on count first (did you know to put $a where it is b/c $num was there before?) And if that is equal, the numbers themselves are compared. The keys are being sorted.

Sorry for the trouble I'm having with this, I hope I was close/this makes sense to you.

In reply to Re^2: How to (get started on) sort AoA or AoH by frequency by jonc
in thread How to (get started on) sort AoA or AoH by frequency by jonc

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