What is the equivalent of PHP's InfiniteIterator in .NET?

Question

I had a discussion on PHP's InfiniteIterator with a friend.

Is there an equivalent of it in the .NET world?

What does it do? Is that the same as an infinite while loop? — Jack, Apr 19 '12 at 00:34
This is what I tought I first but I also tought it would be too easy to be true. Right? — Pascal Paradis, Apr 19 '12 at 00:46

score 4 · Accepted Answer · answered Apr 19 '12 at 00:23

4

Not built-in but easy to write:

public static IEnumerable<T> RepeatInfinitely<T>(this IEnumerable<T> sequence)
{
 while(true) {
  foreach(var item in sequence)
   yield return item;
 }
}

answered Apr 19 '12 at 00:23

usr

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score 1 · Answer 2 · answered Apr 19 '12 at 00:28

you can just roll your own.

public class InfiniteEnumerator: System.Collections.IEnumerator
{
    private System.Collections.IEnumerator  _m_enumerator;
    public InfiniteEnumerator(System.Collections.IEnumerator enumerator)
    {
        _m_enumerator = enumerator;
    }

    public object Current
    {
        get { return _m_enumerator.Current; }
    }

    public bool MoveNext()
    {
        if (!_m_enumerator.MoveNext())
        {
            _m_enumerator.Reset();
            return _m_enumerator.MoveNext();
        }
        else
        {
            return true;
        }
    }

    public void Reset()
    {
        _m_enumerator.Reset();
    }
}

What is the equivalent of PHP's InfiniteIterator in .NET?

2 Answers2