Aside from what Steve mentioned: - Simpler lifetime system: Both a pro and a con, because some functions will not be expressible using "c++ borrowing" - No `A

Aside from what Steve mentioned: - Simpler lifetime system: Both a pro and a con, because some functions will not be expressible using "c++ borrowing" - No `Alias XOR mutability`, which in rust protects from memory issues and things like iterator invalidation. Not sure if isocpp addresses the segfault that can be caused by vector<int> v; // fill it up with elements int *ptr = v[3]; v.push_back(0); // may reallocate cout<<*ptr; // may segfault its been a while since I looked at the guidelines and I'm not sure of either of these points, take them with a grain of salt.