Bug 7776 – std.array.join on const array of strings too

import std.array: join; void main() { string[] data1 = ["foo", "bar"]; auto r1 = join(data1, "_"); // OK const string[] data2 = ["foo", "bar"]; auto r2 = join(data2, "_"); // error } DMD 2.059head gives: test.d(6): Error: template std.array.join(RoR,R) if (isInputRange!(RoR) && isInputRange!(ElementType!(RoR)) && isForwardRange!(R) && is(Unqual!(ElementType!(ElementType!(RoR))) == Unqual!(ElementType!(R)))) does not match any function template declaration test.d(6): Error: template std.array.join(RoR,R) if (isInputRange!(RoR) && isInputRange!(ElementType!(RoR)) && isForwardRange!(R) && is(Unqual!(ElementType!(ElementType!(RoR))) == Unqual!(ElementType!(R)))) cannot deduce template function from argument types !()(const(immutable(char)[][]),string)

*** This issue has been marked as a duplicate of issue 7690 ***