Ranges, constantly frustrating

[Regan Heath]

On Tue, 11 Feb 2014 19:08:18 -0000, Jesse Phillips  
<Jesse.K.Phillips+D at gmail.com> wrote:

> On Tuesday, 11 February 2014 at 13:00:19 UTC, Regan Heath wrote:
>> import std.stdio;
>>
>> struct S1 {
>>    private int[] elements = [9,8,7];
>>    int opApply (int delegate (ref uint, ref int) block) {
>>        foreach (uint i, int n ; this.elements)
>>            block(i, n);
>>        return 0;
>>    }
>> }
>>
>> void main()
>> {
>> 	S1 range;
>
> S1 is not a range. But this is a correct response to "Is foreach(i, val;  
> aggregate) even defined if aggr is not an array or associated array?"

True, but then I had missed the fact that there are two distinct  
mechanisms (opApply/range) in play here.

R

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