C# IEnumerator

[@TheDmitryIgorevich]

Brilliant! I could not find this explanation anywhere else!

[@jvsnyc]

Maybe if I understood the yield return idiom better already, or if I understood the foreach ( ) semantic better, I would agree that this goes without saying. But, coming from C++ where you can and do use the equivalent of foreach(), there called for() just to be different I suppose -- you can use that foreach() equivalent for write access to a container or range of values. So....if this foreach thing gives readonly access to something, it is the kind of thing one would hope to be pointed out. 26 times out of 27, these videos give interesting and illuminating details that others leave out. In this case, this dandy sentence would have been helpful to introduce this topic, at least to people who are mostly used to C/C++: "IEnumerable is an interface that defines one method: GetEnumerator() which returns an IEnumerator interface, which allows readonly access to a collection." Okay, I lied, I like his next few sentences too: "IEnumerable is some type that you can loop thru. It is read only. If you just need only to read, sort or filter your collection, IEnumerable is what you need." This is pretty different than C, which has no foreach equivalent and no iterators of any type, and C++ which considers readonly iterators a special class of their own, and let's its foreach (for) have either read or write access to whatever it iterates over. I think I even understand why the readonly obsession, you can use IEnumerable to loop thru a bunch of values that aren't coming from a collection at all, but say, but are getting received from somewhere else for instance, being randomly spat out by logic or even Random.next() invocations... To my shame, at the moment I can't remember if Java's foreach and iterators are readonly like this or give you options like C++ to write to the place you are iterating over.

[@ivandrofly]

Man you have the best video tutorial I've seen on KZbin #JamieKing #computerscience #csharp

[@judith2203]

Excited to see more of your work to assist me with my studies. Great video man

[@KamillaMirabelle]

The IEnumerator does not only take linear ordet collection, and thats is a difference between indexing and IEnumerator. let say that we have a collection that is of a tree structure, or a even more complex structure. then you need to give C# an method to go through the collection in an ordet maner. That's why C# maked the IEnumerator interface :)

[@streambai5656]

You are so great! You should add more videos!

[@jamesleo1498]

I like this video. It clarified some things for me. Would you be so kind as to talk about how the GetEnumerator() method returns the IEnumerator interface which seems to be almost like a collection of objects itself? Hopefully that question makes sense.

[@oguzhanozhan]

i have ti admit,,sometimes i am saying, what the heck is he talking about:) but at the end ..i am saying..oohh yeah...You are doing a great job Mr. King..Thanks:)

[@connorhatcher2202]

Simple explanation, great tutorial.

[@47Mortuus]

Unfortunate that the entire 37 video "C# containers" playlist only consists of arrays.

[@jimmynguyen7961]

Exactly the explanation I was looking for. Thank you!

[@stevancosovic4706]

Great video, thanks!

[@Геннадій-ц8э]

That is great as well as funny to listen )) Thank you!!!

[@ivandrofly]

Thank you Mr. King :)

[@evilnekowantznobs]

Damn do I love these tutorials.

[@vladajamajka]

Thanks mate! You rock!

[@JamieKingCS]

+Vlada Karovic Yep! Glad it helped you!

[@Jointknight]

Awesome again!!!

[@IroshanVithanage]

On point... Thanks :)

[@seanshimon]

Thanks a lot man.

[@aboutvenice]

nice! thx

[@mazdysoraya6121]

Great. Shared.

[@atlantichollywoodentertain650]

So I was playing with this so I could get a good understanding of it and I tried iterating through a list of objects that I made call "Employees". I tried using my my iteration reference variable **IEnerator tryIEnum = employList.GetEnumerator()** to retrieve a property of one of the objects **tryIEnum.Name** but it didn't work. I am not sure if I am understanding this.

[@JamieKingCS]

+ATLANTIC HOLLYWOOD ENTERTAINMENT tryIEnum.Value.Name

[@atlantichollywoodentertain650]

+Jamie King Thanx man. when I tried **tryIEnum.Current.Name** I was able to retrieve the property value.When Console.WriteLine() the **tryIEnum** I get **System.Collections.Generic.List blah blah blah**

[@seven.0158]

Stupid question but ....... why can't I write Console.writeline (myPartyAges[1]); ? or do a for (.......... ?

[@JamieKingCS]

+Ricard Hagerman You can... ?

[@seven.0158]

+Jamie King just wait for a few videos, was missing the indexer thx

[@PodcastClips1212]

i don't understand why you don't use the name Ola