He didn't exclude that any of the keys may also be a value, although it is definitely reasonable to doubt about this.
I took the OP to mean that each value would be unique in the hash. That is to say that for any key or value in the hash, there would not exist any other key or value that would have the same..erm...value.

thor

Feel the white light, the light within
Be your own disciple, fan the sparks of will
For all of us waiting, your kingdom will come

In reply to Re^3: Bi-Directional Hash Lookup by thor
in thread Bi-Directional Hash Lookup by PerlingTheUK

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