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The wikipedia has a good explanation: https://en.wikipedia.org/wiki/Covariance_and_contravariance_(computer_science)#Arrays https://en.wikipedia.org/wiki/Covar

by js2 7y ago

The wikipedia has a good explanation: https://en.wikipedia.org/wiki/Covariance_and_contravariance_(computer_science)#Arrays https://en.wikipedia.org/wiki/Covariance_and_contravariance_...