where are covariant and contravariant used in C#? [closed] - c#

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I have never seen covariance and contravariant being use in a console application and even the definition of these two is pretty confusing.
In what cases are these 2 used and in what situations they can come in handy?

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Which .net builtin functions use the params keyword? [closed]

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I am explaining the purpose and usage of the C# params (C++CLI ...array) keyword to my colleague and wanted to show him some functions of .net that make use of it. But right know I don't remember any.
For those who want to answer: Feel free to list as many as you know. But I would be happy with one already.
string.Format("It is now {0}.", DateTime.Now)
Console.WriteLine("It is now {0}.", DateTime.Now)

How to assign Transform via code [closed]

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How can i assign automatically the Transform via code using something like GameObject.FindObjectOfType?
raycastEnd = GameObject.Find("RaycastEnd").transform;
If you have multiple objects named "RaycastEnd" it will return the first one. the first one may be unpredictable.

Why would I not use SqlBulkCopy.EnableStreaming? [closed]

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The documentation says that it uses less memory, and my ad hoc performance tests show that it is faster. So why would I ever choose to not enable streaming?
Reference: SqlBulkCopy.EnableStreaming Property

Scenarios in which String.Intern should be used? [closed]

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When should we consider using String.Intern in C#, keeping in mind its performance considerations that the memory is occupied for these String objects till CLR terminates it?

How to get assembly codes which access memory section in other process ? - C# [closed]

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I mean how can i make function like "Find out what accesses this address" in Cheat engine.
I need a quick good Function
and thanks
IDebugControl::AddBreakpoint.

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