https://pastebin.com/BYcRN8T2
why called copy constructor for ref Range struct type in foreach ?
```
struct MyRange {
private int current_row = 0;
private int rows_count = 5;
@disable this(this); // <===
bool empty () { return current_row == rows_count; }
int front() { return current_row*current_row; }
void popFront() { ++current_row; }
}
struct Container {
@disable this(this); // <===
int opApply(int delegate(int) dg) {
foreach (int row; 0..5) dg(row*row);
return 1;
}
}
void foreach_iterable(Type)(ref Type iterable) {
import std.stdio: writeln;
foreach (int row_value; iterable) { // test_range.d(20):
Error: struct test_range.MyRange is not copyable because it is
annotated with @disable
row_value.writeln;
}
}
void call_iterable(Type)() {
Type iterable;
foreach_iterable(iterable);
}
void main() {
call_iterable!Container(); // work
call_iterable!MyRange(); // does`t work
}
```
ldc2 version: version 1.8.0 (DMD v2.078.3, LLVM 5.0.1)
