Why doesn't it compile?
```
struct Range(R) {
import std.array : empty, front, popFront;
R range;
bool empty() const { return range.empty; }
auto front() const { return range.front; }
void popFront() { range.popFront(); }
}
void main() {
auto rng = Range!string("1234");
assert(rng.front == 1);
}
```
onlineapp.d(11): Error: void has no value
onlineapp.d(11): Error: incompatible types for (rng.front) ==
(1): void and int
try here: https://run.dlang.io/is/Dg8Fpr
If you move the import to the global scope, you will get a weird
result:
```
import std.stdio;
import std.array : empty, front, popFront;
struct Range(R) {
R range;
bool empty() const { return range.empty; }
auto front() const { return range.front; }
void popFront() { range.popFront(); }
}
void main() {
auto rng = Range!string("1234");
writefln("front: %s", rng.front);
assert(rng.front == 1);
}
```
front: 1
core.exception.AssertError@onlineapp.d(14): Assertion failure
----------------
??:? _d_assertp [0x56107489bc75]
onlineapp.d:14 _Dmain [0x561074889902]
try here: https://run.dlang.io/is/arieKR
WAT???
