[euhlmann]

The new operator creates objects on the heap, which means C++ will not clean them up automatically, and if you lose all pointers to them before cleaning them up you'll get a memory leak. As @teslalab2 said, you can allocate objects on the stack or associated with another object to have C++ automatically delete them when they go out of scope. If you need a heap object but don't want to worry about manually cleaning it up, you can use a std::shared_pointer. To create a shared Timer pointer, use std::make_shared<Timer>()