title: Java HashSet equivalent in C++
body: <p>I was curious if there was something akin the Java HashSet in C++? I.e. a data structure with a fast look, as I will only be running <code>.contains(e)</code> on it. Likewise, if you could enlighten me on how to do a <code>.contains()</code> on whatever data structure you propose, I would be very appreciative. O, please do not post just look at the c++ docs as I have already done so and found them burdensome.</p>