D import idiom compilation time

[Dgame]

On Wednesday, 9 January 2019 at 22:39:58 UTC, Jonathan Marler 
wrote:
> Make sure whoever works on it is aware of this:
>
> https://github.com/marler8997/dlangfeatures#lazy-imports
>
> To summarize, there's no way to make normal imports lazy (i.e. 
> "import foo;"). However we can make the following lazy by 
> default:
>
> 1. static imports (static import std.typecons;)
> 2. selective imports (import std.typecons: isBigEndian;)
> 3. aliased imports (import t = std.typecons;)
>
> I had a partial implementation for lazy imports, but Walter 
> never reviewed my other pull requests so I never pushed it.

Maybe I'm missing something, but wouldn't it be possible to lazy 
import `import foo;` if the compiler checks lazily if a symbol 
isn't found in the current scope and only then tries to find it 
in one of the imports? Or would that be ineffective?

Example:
----
import foo; // contains bar2

void bar1() { }

bar1(); // in current scope
bar2(); // not found, we have to search in the imports
----