How do you get the index of the current iteration of a foreach loop?

Question

Is there some rare language construct I haven\'t encountered (like the few I\'ve learned recently, some on Stack Overflow) in C# to get a value representing the current iter

Answer 1

Finally C#7 has a decent syntax for getting an index inside of a foreach loop (i. e. tuples):

foreach (var (item, index) in collection.WithIndex())
{
    Debug.WriteLine($"{index}: {item}");
}

A little extension method would be needed:

public static IEnumerable<(T item, int index)> WithIndex(this IEnumerable self)       
   => self.Select((item, index) => (item, index));