foreach-else

gistfile1.txt

It would be nice in C# to have a foreach-else.
I would like the else branch to execute when the collection was empty.
In that sense, either I loop over a collection OR I execute this code.

This would change 

var empty = true;
foreach (var e in enumeration) {
  empty = false;
  // ...
}
if (empty) {
 // ...
}

to 

foreach (var e in enumeration) {
  // ...
} else {
  // ...
}

Some people think that it's a solution to do

if (enumeration.Any()) {
  foreach (var e in enumeration) {
    // ...
  }
} else {
  // ...
}

But please note that
 a) this requires allocations of unnecessary iterators
 b) foreach is nested one additional level, but most important
 c) you get those annoying warnings that you're enumerating your IEnumerable more than once.

I think the way it is named in Python is wrong. I don't have a name, but as it is explained
right in the beginning of an article [0] it is confusing and does not match the intuitively
expected behavior. What more reason do I need to discard this right away?

[0]: http://python-notes.curiousefficiency.org/en/latest/python_concepts/break_else.html