Lazy private selective imports

[Peter Alexander]

On Tuesday, 25 March 2014 at 22:44:30 UTC, Martin Nowak wrote:
> On 03/24/2014 10:18 PM, Peter Alexander wrote:
>> Would it be possible to perform private selective imports 
>> lazily? i.e.
>> only import when the symbol selectively imported is requested.
>>
> Laziness only makes sense for static imports, because otherwise 
> the compiler needs to check for overloads during symbol lookup.

If I only import writeln from std.stdio then you only overload 
resolution that could effect is that of the symbol writeln. That 
means you only need to process the import when writeln is 
encountered. No?

e.g.

import std.stdio : writeln;
void main() { foo(); }

There should be no need to look in std.stdio at all here, 
regardless of whether it contains foo or not because I'm only 
importing writeln.