HaloO, John M. Dlugosz wrote:
Variance?
Yeah, the standard set of co-, contra-, in- and bivariance ;) Assume A <: B being subtypes. Then how should Foo[A] and Foo[B] relate? Foo[A] <: Foo[B] # covariance Foo[B] <: Foo[A] # contravariance Invariance means there's no relation at all. And Bivariance means both! Regards, TSa. -- "The unavoidable price of reliability is simplicity" -- C.A.R. Hoare
