Can you give a real-world, non-foo/bar example where you want to
use it? I have trouble understanding what you want to accomplish.
On Wednesday, 10 October 2018 at 23:04:46 UTC, James Japherson
wrote:
It also has no context in and of itself. The compiler knows
what to do with it... The same can be done with function
arguments. You just haven't thought about the problem enough.
The usefulness comes from the case when bar is local:
void foo(int loc)
{
auto bar = double[RandomPInt+1];
return bar[loc];
}
That also brings some difficulties. What kind of code do you
expect the compiler to generate when the declaration is unknown?
```
int getFromArray(int loc); // implemented in another file,
compiled separately
void main() {
getFromArray($); // what integer is passed?
}
```
Finally I want to note that accessing element $ is a range
violation, $-1 is the index of the last element in an array. $
can be used as an endpoint for intervals (where the endpoint is
excluded from the range):
```
auto popped = arr[1..$]; //pop the front element
auto elem = popped[$-1]; //okay, last element
auto err = popped[$]; //range violation
```
