Store the values in an anon array as the value of the hash at that key. When you encounter a key,
  1. read the array at that value if it exists,
  2. push the new value onto the end of the array,
  3. then write it back to the value of the hash.
The size of the anon array is the number of times that key appeared, and you can also easily extract the number of unique values.

In reply to Re: Convert XML to Hash by samizdat
in thread Convert XML to Hash by D'Femstar

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