About foreach loops

[Jesse Phillips]

Nice! I've always expected bearophile's behavior and end up switching to a for loop when wanting to modify the index.

Caligo Wrote:

> 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