How to force evaluation of range?

[cym13 via Digitalmars-d-learn]

On Saturday, 13 February 2016 at 02:17:17 UTC, Xinok wrote:
> On Friday, 12 February 2016 at 20:43:24 UTC, Taylor Hillegeist 
> wrote:
>> So I have this code and I have to add the element
>> .each!(a => a.each!("a"));
>> to the end in order for it to evaluate the range completely 
>> and act like I expect it too. Is there a  better thing to put 
>> in the place of
>> .each!(a => a.each!("a"));?
>>
>> ...
>
> The following combination might work:
>
> .joiner.each;
>
> http://dlang.org/phobos/std_algorithm_iteration.html#.joiner
>
> http://dlang.org/phobos/std_algorithm_iteration.html#.each

Why not just  .each;   ?