What is the relationship between LS开发者_运维百科P and Covariance and Contravariance? Is there any relationship? Is LSP a form of Covariance ?I wouldn\'t say that Liskov\'s Substitution Principle is
This question already has answers here: Closed 12 years ago. Possible Duplicates: Why isn't there generic variance for classes 开发者_运维技巧in C# 4.0?
I have the following classes/traits in Scala trait Write[-T] { def add(elem : T); } class ContraListWrapper[T] (var list : List[T]) extends Write[T]{
I often forget if i have to use in or out when defining covarient and contravarient generic types. In java i have the mnemonic PECS (producer extends consumer super) to help me. Do you know a similar
Before C# 4.0 came out, I was quite excited about covariance and contravariance. It pandered to my fondness for theoretical correctness!
Is this a limitation of the CLR or are there compatibility concerns with existing code? Is this related to the messed up variance of delegate combining in C# 4.0?
I need to have a collection of generic functions, but I can\'t get it done in the way I like. I created a
public interface IMyControl<in T> where T : ICoreEntity { void SetEntity(T dataObject); } public class MyControl : UserControl, IMyControl<DataObject>// DataObject implements ICoreEntity
In the CLR via c# third edition there is an example that I cant seem to make sense of: Invariant Meaning that that generic
This question already has answers here: Closed 12 years ago. Possible Duplicate: Why isn’t there generic variance for classes in C# 4.0?
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