Re: alias to fully qualified symbol gives error, but when module is also a symbol

[Adam D. Ruppe via Digitalmars-d-learn]

On Sunday, 5 May 2019 at 15:22:31 UTC, Dennis wrote:
I was trying to rename an imported `sqrt` (wrongly), but I 
stumbled upon this weird behavior:
```
void main() {
    import core.stdc.math: sqrtf, sqrt;
    alias sqrtd = core.stdc.math.sqrt;
    auto a = sqrtd(1);
}
```
onlineapp.d(3): Error: undefined identifier core.stdc.math.sqrt


You didn't actually import the name `core` there, only the 
specific symbols `sqrtf` and `sqrt`, which are now considered 
direct children of your scope. So it doesn't know where to begin 
with that fully qualified name - it doesn't know what `core` is.

So this is working as designed by the module and name lookup 
rules.


The std.stdio one is supposed to be an error; the old buggy 
behavior was to bypass the private import in these cases and that 
is why it is deprecated pending changes.