Mapping with partial

[matovitch via Digitalmars-d-learn]

Thanks. On a sader note, I found a respons'less thread about my 
second question :
http://forum.dlang.org/thread/mailman.2247.1353945423.5162.digitalmars-d-learn@puremagic.com

"where std.container.Array is concerned: how come I can't use a 
foreach(i, x; myArray) formulation?  I.e. one where the foreach 
can infer the index value as well as the contained value ..."