Re: [Rails] ensuring random list of numbers are unique

> 500.times.map { Integer((rand * 1) * 1000) / Float(1000) }
>
> Basically, this gives me a list of 500 random decimal numbers that are
> rounded to 3 places. However, I also want to make sure that all are
> unique.

Tack a .uniq to the end...

http://ruby-doc.org/core-1.9.3/Array.html#method-i-uniq

-philip

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