use a Set?
http://docs.julialang.org/en/latest/stdlib/collections/?highlight=set

On Mon, May 18, 2015 at 4:46 PM Scott Jones <[email protected]>
wrote:

> I would like to be able to do the following in Julia:
> Take a UInt64 (or UInt128, for that matter), and add it to an array, if it
> is not already present, returning the index.
> (This would be trivial in the language I used to work on, and I think it
> probably is in Julia as well, but I haven't found the right data structure
> yet...)
> What would be the best performing way of handling that?
> What if, instead of an UInt64 or UInt128, I had an array of bytes (like
> 128 or 256)?  What would be the best way for that?
>
> Thanks, Scott
>

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