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__________ and __________ introduced with C#4.0 as a new features?
on 10/27/2014 | Category:
C# Interview questions
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Select from following answers:
Covariance and Contravariance
Func and Action
All of above
Covariance and Contravariance are introduced as a new features with C#4.0 Covariance and contravariance enable implicit reference conversion for array types, delegate types, and generic type arguments. Covariance preserves assignment compatibility and contravariance reverses it.
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