Chapter 12 page 369 Covariance & Circumstances

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Chapter 12 page 369 Covariance & Circumstances

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January 12th, 2012, 03:32 PM

Frodo

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Chapter 12 page 369 Covariance & Circumstances

You say

Quote:

In most circumstances, contravariance is something that simply happens...you can now implement it yourself with the techniques shown in this section whenever you need it.

When is it not something that simply happens? Is it something we ever need worry about?

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