auto ref and arrays
Jack Applegame
japplegame at gmail.com
Tue Nov 27 14:09:20 PST 2012
I don't understand why auto ref doesn't work with arrays.
void test1(T)(auto ref const T[] val) {}
void test2(T)(auto ref const T val) {}
void main() {
int b;
test2(b); // OK
string a;
test1(a); // Error: cast(const(char[]))a is not an lvalue
}
Since a is mutable itself, compiler uses ref storage class.
cast(const(char[]))a isn't an lvalue, so it's impossible to pass
it by ref.
But cast(const int)b isn't an lvalue too. Why it's no errors in
this case?
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