IEnumerable interface implements foreach to traverse instances

Why write?

I went to an interview once. I didn't remember this word because I used it very little. How can I write it!

Classic interview questions:

Usable

Today, I read MSDN about IEnumetable. I didn't understand this interface for the first time! What should I do? Write it once by yourself! This method is very good. I recommend it!

Naming rules can be used.

 

          List<> list =  List<>();              .list.Add(value);                   .name =  .list.Add(value);                   .age =  .list.Add(value);                  .id =                           NsIEnumerator(                    ids = -;                Ns n;                       .n =  MoveNext()     .ids++ (.ids <   Reset()     .ids = -  Current    .n.list[  Main(= = = =  ( n1 

 

Nothing special, that is, many people may know this feature as well as me, but they have never implemented it themselves. Paste one to show those users. Convenience