Re: foreach seems to work with opIndex()

[Tofu Ninja via Digitalmars-d-learn]

On Saturday, 6 February 2016 at 14:43:52 UTC, Tofu Ninja wrote:

Foreach seems to work if there is an opIndex() with no arguments that returns a range interface, is this documented? I can't seem to find anything that say this is supposed to happen. I am not really complaining, its nice, but I just didnt really expect it because I feel like I remember this being an error some time ago.

To clerify, I was doing something like

struct someStruct{
     ...
     dchar[] opIndex(){
          if(data==null) return null;
          else return data.some_array;
     }
}
...
someStruct s;
foreach(c;s) {}

I expected to need to write
foreach(c;s[]) {}