Thanks, toDelegate is what I've been looking for.
It still segfaults, though.
The setup:
=======
module mod1;
import std.algorithm;
import std.functional;
import std.stdio;
void main( ) {
auto haystack = ["a","b","c"];
auto needle = "b";
auto flt = delegate(string s){return s == needle;};
auto dg = toDelegate( flt );
auto result = filter!dg(haystack);
writeln(result);
}
=========
module mod2;
import std.string;
// or import std.conv;
// or import std.random;
========
dmd mod2.d mod1.d compiles, but compiled program segfaults.
System is Debian GNU/Linux 5.0 on 2.6.26-2-686 #1 SMP i686.
dmd is D 2.051.
Simen kjaeraas Wrote:
> Mitja <odtih...@gmail.com> wrote:
>
> > I would like to have a template which returns
> > appropriate delegate, something like this:
>
> So like this?
>
> module mod1;
>
> import std.algorithm;
> import std.functional;
> import std.stdio;
>
> void main( ) {
> auto haystack = ["a","b","c"];
> auto needle = "b";
> auto flt = (string s){return s == needle;};
> auto dg = toDelegate( flt );
> auto result = filter!dg(haystack);
> writeln(result);
> }
>
> I would have to argue that the delegate is hardly templated, though. Not
> sure what that means.
>
> > What would be the correct way for templated delegate?
>
> Depending on what you mean by 'templated delegate', I would say
> std.functional's toDelegate, as used above.
>
> Perhaps if you explained what you mean by 'templated delegate', I could
> give a better answer.
>
> --
> Simen
