Louis,
So far, it doesn't seem like anything would prevent you from using a hash. If you are "locked in" to an array for some unspecified reason, there is Array::Unique. Keep in mind that the tied array will function much more slowly than a non-tied array.

Cheers - L~R

In reply to Re: Add distinct elements to an array by Limbic~Region
in thread Add distinct elements to an array by cosmicsoup

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