How about making each "set" an object rather than just an anonymous array and store references to the objects in the %bools hash. You could then iterate over @someOrder in a loop rather than hash slicing and use the object destructor to take some action when the final reference to a "set" is deleteed from %bools.

Just a thought that occurred to me while trying to get to sleep :-/

Cheers,

JohnGG

In reply to Re^3: Better algorithm or data structure? by johngg
in thread Better algorithm or data structure? by BrowserUk

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