https://issues.dlang.org/show_bug.cgi?id=16569

b2.temp@gmx.com changed:

           What    |Removed                     |Added
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             Status|NEW                         |RESOLVED
                 CC|                            |b2.temp@gmx.com
         Resolution|---                         |INVALID

--- Comment #1 from b2.temp@gmx.com ---
It's not a bug. splitter returns a range, in your case this range is empty. The way of iterating/using a range is always to test for emptiness before using front/back or popFront/Back:

auto rng = str.splitter('.');
if (!rng.empty)
    writeln(rng.back);

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https://issues.dlang.org/show_bug.cgi?id=16569

Basile-z <b2.temp@gmx.com> changed:

           What    |Removed                     |Added
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                 CC|b2.temp@gmx.com             |

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