About foreach loops

[Caligo]

I think D is fine and you may be confusing index with element.

The equivalence of your Python example in D is this:

  foreach(e; [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]){
    e += 1;
    write(e, " ");
  }

or this:

  foreach(e; take(recurrence!("a[n]+1")(0), 10)){
    e += 1;
    write(e, " ");
  }

and they both output:
1 2 3 4 5 6 7 8 9 10



This:

  foreach(i; 0..10){
    i += 1;
    write(i, " ");
  }

is the same as this:

  for(int i = 0; i < 10; ++i){
    i += 1;
    write(i, " ");
  }

and they both output:
1 3 5 7 9


This might make it clear:

  foreach(i, e; [0, 1, 2, 3, 4, 5, 6, 7, 8, 9]){
    i += 1;
    writeln(i, " ", e);
  }

which outputs:
1 0
3 2
5 4
7 6
9 8