LI WEI thinks this is interesting: TSet<int> uni = X.Union(Y); // 1, 2, 3, 4, 8 From TSet from Learning C++ by Creating Games with UE4 by William Sherif Publisher: Packt Publishing Released: February 2015 Note 将不同的TSet元素剥离出来 Share this highlight http://www.safaribooksonline.com/a/learning-c-by/11619592/ Twitter Facebook Google Plus Email Get Instant Access Now Start a Free Trial Learn about Safari for Business Have an account? Sign in. Minimise Unlock the rest of Learning C++ by Creating Games with UE4 and 30,000 other books and videos By clicking this box, you confirm that you have read and agree to the terms and conditions of our Membership Agreement, and you understand that when your trial period ends, you will be required to provide billing information if you wish to continue using the service. Unlock the rest of this book Start a Free 10-Day Trial loading Learn about Safari for Business Have an account? Sign in.