Task to throw away string parts, use joiner and splitter not very successful

[monarch_dodra]

On Wednesday, 1 January 2014 at 07:40:40 UTC, Dfr wrote:
> And one more problem here:
>
>     string name = "test";
>     auto nameparts = splitter(name, '.');
>     writeln(typeof(joiner(nameparts, ".").array).stringof);
>
> This prints "dchar[]", but i need char[] or string, how to get 
> my 'string' back ?

It's actually because "joiner" returns a range of dchar. It's 
kind of inefficient actually. If you instead write a minimal 
"RangeJoiner", you can get: