[Issue 3377] New: [tdpl] static foreach should be implemented

[d-bugmail at puremagic.com]

http://d.puremagic.com/issues/show_bug.cgi?id=3377

           Summary: [tdpl] static foreach should be implemented
           Product: D
           Version: unspecified
          Platform: Other
        OS/Version: Linux
            Status: NEW
          Severity: enhancement
          Priority: P2
         Component: DMD
        AssignedTo: nobody at puremagic.com
        ReportedBy: andrei at metalanguage.com


--- Comment #0 from Andrei Alexandrescu <andrei at metalanguage.com> 2009-10-08 12:12:29 PDT ---
This should compile:

import std.contracts;

double unrolledDotProduct(double[] a, double[] b) {
   enum branches = 4;
   enforce(a.length == b.length);
   double result = 0;
   auto n = (a.length / branches) * branches;
   double temp[branches];
   for (size_t i = 0; i != n; i += branches) {
      static foreach (j ; 0 .. branches) {
         temp[j] = a[i + j] * b[i + j];
      }
      result += inline_sum(temp);
   }
   foreach (j; n .. a.length) {
      result += a[j] * b[j];
   }
   return result;
}

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