Unique random number sequence using qrand() and qsrand()

qt, random

Solution

No. `qrand` can only generate as many unique numbers as fit into an integer, so -- whatever the implementation -- you cannot count on uniqueness.

Also, knowing that a different seed creates a different random integer would yield a level of predictability that effectively makes `qrand` not random anymore.

Edit: I swear I'm not trying to make fun of you by posting a cartoon; I think this is a quite good explanation of the problem:

(source: dilbert.com)

Problem

I want to generate unique random number sequence in QT, Using QDateTime::currentDateTime().toTime_t() as seed value, will qrand() generate unique random numbers?

Original source