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Questionthen the new student submits their answer to ... Pin
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Richard Deeming10-Aug-23 23:27
mveRichard Deeming10-Aug-23 23:27 
Some more confusion for you from Reddit, relating to the older default interface implementation rather than the newer static interface members:
I had a question while reading the Microsoft docs on interfaces

https://learn.microsoft.com/en-us/dotnet/csharp/language-reference/proposals/csharp-8.0/default-interface-methods#reabstraction[^]

In the docs, they give the example
C#
interface IA
{
    void M() { WriteLine("IA.M"); }
}
interface IB : IA
{
    abstract void IA.M();
}
class C : IB { } // error: class 'C' does not implement 'IA.M'.

Which forces you to implement method M in class C. However, you can also define the interface IB this way, which also forces method M to be defined in class C.
C#
interface IA
{
    void M() { WriteLine("IA.M"); }
}
interface IB : IA
{
    new void M();
}
class C : IB { } // error: class 'C' does not implement 'IB.M'.

I did notice there is a small difference, where since in the second example, interface IB is shadowing IA, the error message changes, but in practice, is there any difference between these two?




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GeneralRe: then the new student submits their answer to ... Pin
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QuestionCount DataGridview row values and compare with an Array (Resolved) Pin
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Edilson Lemos 20219-Aug-23 14:00
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Andre Oosthuizen9-Aug-23 21:24
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