Query regarding IEnumerable [modified] - Stupid question

[dan sh]

Take a look at this question: If a class does not implements IEnumerable interface,which of the following is cannot be used? a. GetEnumerator() b. ForEach I had to choose one option and I think both are true. Am I correct? (It was an online test on a widely used website)

modified on Tuesday, July 8, 2008 1:19 AM

[PIEBALDconsult]

It's possible for a class to have a GetEnumerator method without actually implementing IEnumerable.

[PaulLinton]

I can create a method on any class called GetEnumerator(), it doesn't have to have anything to do with IEnumerable. Eg public class DumbClass { public string GetEnumerator() { return "Good morning";} } Not very useful but now I can say DumbClass x = new DumbClass(); Console.WriteLine(x.GetEnumerator()); ForEach needs an implementation of IEnumerable.

[dan sh]

PaulLinton wrote:

I can create a method on any class called GetEnumerator(), it doesn't have to have anything to do with IEnumerable

I meant the one that comes with the interface.

[N a v a n e e t h]

d@nish wrote:

ForEach

All C# applications should call Application.Quit(); in the beginning to avoid any .NET problems.- Unclyclopedia How to use google | Ask smart questions

[PIEBALDconsult]

Nothing "comes with" an interface.