How do I test to see whether or not a vector contains a specific entry? I've looked all over the MSDN doc on std::vector and I don't see anything.

For example:

std::vector<int> myVector;
myVector.push_back(10);
myVector.push_back(20);
myVector.push_back(30);

Aside from looping through the vector manually, what do I do to determine if the vector contains the value 20?

Thanks