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foreach and IEnumerator

foreach and IEnumerator

George George

18yAsked Apr 30, 2008, 6:00 AM6.8kVisual Basic .NET

Hello everyone,

Two questions,

How foreach utilizes the IEnumerator interface and IEnumerable interface? Any there any docuements? I am interested in it.

Pros and cons compared with using foreach and using simple index variable to iterate? Like,

[Code]
for (int i = 0; i < abc.Count; i++)
{
// access abc [i] here
}
[/Code]

thanks in advance,
George

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George George18y ago
Beyond the so-called pattern or something, any practical benefits we could have? For example, Flexibility? Performance? :-)

regards,

George
Santhosh Veeraraman18y ago
one reason could be, foreach is built on "iterator" pattern which is a proven solution for iterating jobs.
George George18y ago
Thanks Manish,

I am interested in this topic. What advantage could we have in foreach? I think making a copy is slower... why CLR does so?

regards,

George
Blocked Account18y ago
Hi George.
Basically Foreach is used for the collection and foreach copies the current array to a new one for the operation. While for doesn't care of that part.

Happy Coding!!