[dmd-beta] dmd 2.063 beta 3

[Kenji Hara]

This behavior is intended change.

>From 2.063, UFCS name lookup finds *most inner* imported name.

module test;
void map(alias func, T)(T){}  // dummy
void main() {
    import std.algorithm;
    auto r = [1,2,3].map!(a=>a*2);    // hit std.algorithm.map instead of
test.map
}

As already Walter says, the precedence is now changed as same as normal
name lookup rule.

Kenji Hara


2013/5/19 Andrej Mitrovic <andrej.mitrovich at gmail.com>

> On 5/18/13, Walter Bright <walter at digitalmars.com> wrote:
> > I don't agree. A base class's scope must override the top level module
> > scope.
> >
> > Also, a base class can always override what a derived class does. This is
> > not hijacking.
>
> Don't you see that this change in behavior is going to surprise a lot
> of people? It's intuitive to me that this is going to cause trouble
> down the road. A base class could be in another file, in another
> library, and if the library writer decides to introduce a scoped
> import, suddenly the user's code might end up calling the wrong
> function (if the type signatures are the same the user will have *no
> idea* what happened). This is the definition of function hijacking.
>
> If it is a feature, it is not properly documented, and I can't tell
> which pull request changed the behavior so I don't know whether to put
> it in the changelog or not.
>
> Kenji, maybe you know?
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