2 ms·
The difference between covariance and contravariance is enough to get UW professor Dan Grossman jumping up and down: https://www.youtube.com/watch?v=pb_k8h6RuAY
by rectang 9y ago
The difference between covariance and contravariance is enough to get UW professor Dan Grossman jumping up and down: https://www.youtube.com/watch?v=pb_k8h6RuAY https://www.youtube.com/watch?v=pb_k8h6RuAY