Same process to different results?

[Taylor Hillegeist via Digitalmars-d-learn]

On Wednesday, 1 July 2015 at 17:06:01 UTC, Adam D. Ruppe wrote:
> I betcha it is because A, B, and C are modified by the first 
> pass. A lot of the range functions consume their input.

Running them one at a time produces the same result.

for some reason:

   (A.cycle.take(seg1len).array
   ~B.cycle.take(seg2len).array
   ~C.cycle.take(seg3len).array).writeln;

is different from:

   string q = cast(string)
   (A.cycle.take(seg1len).array
   ~B.cycle.take(seg2len).array
   ~C.cycle.take(seg3len).array);
   q.writeln;

I was wondering if it might be the cast?