D2 map trouble

[Nick Sabalausky]

"Philippe Sigaud" <philippe.sigaud at gmail.com> wrote in message 
news:mailman.32.1280323222.13841.digitalmars-d-learn at puremagic.com...
>
> void foo(string str)
> {
> str =
> std.algorithm.map!q{
>  inPattern(a, [digits, letters])? a : '_';
> }
>  (str);
> }
>
> But then I guess inPattern must be visible from std.algorithm.
>
> So my current conclusion it that it's more a limitation of anonymous
> closures than a limitation in map.
>

*sigh*, If D allowed something like this:

mixin string map() { return "code here"; }
map();

As an alternative to or intead of this:

string map() { return "code here"; }
mixin(map());

As I've suggested before (it only got accepted for template mixins, not 
string mixins), then map's string-style predicates could be made to be 
evaluated in the proper context without screwing up map's standard interface 
by requiring it to be called with "mixin(...)".