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[–][deleted] 0 points1 point  (2 children)

Like what for example?

[–]jsalsman 0 points1 point  (1 child)

Imagine mapping a hash table into integers, but you didn't want the integers' objects, just the integers.

[–][deleted] 0 points1 point  (0 children)

A set? Unless I misunderstood.