On Tuesday, 11 February 2014 at 16:26:06 UTC, Rene Zwanenburg wrote:
On Tuesday, 11 February 2014 at 03:10:02 UTC, Jonathan Dunlap wrote:
Wow! This is GREAT stuff. My use-case is slightly more complex, and I'm not sure how to best apply this knowledge. The retro reverses the array which is problematic in itself as well as losing the starting index location. I have an array that I'd like to elegantly "rotate". Best way I can show this is by example of an imaginary rotate function:

auto data = [1,2,3];
assert( data.cycle.rotate(2) == [3,1,2] );
assert( data.cycle.rotate(-2) == [2,3,1] );

Perhaps what I'm doing is too complex requires me making my own iterator or something. In my quest of writing readable efficient code, I'm wondering what's the best route here. Thanks :)

Perhaps something like this?
http://dpaste.dzfl.pl/d4b82b0b5cba

Wait, we can avoid creating that closure and eliminate the map. This should be a bit faster and not use the GC:

http://dpaste.dzfl.pl/78c65eacfeb1

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