import std.stdio : writeln;

​

mixin template FooOne()

{

    final void foo( ref int val )

    {

        val.writeln;

    }

}

​

mixin template FooTwo()

{

    final void foo( ref string val )

    {

        val.writeln;

    }

}

​

mixin template FooThree()

{

    final void foo( ref float val )

    {

        val.writeln;

    }

}

​

string TheFollowing( Mixins... )()

{

    string strOutput;

    foreach( Mixin; Mixins )

    {

        string strMixinName = "mixin_" ~ __traits( identifier, Mixin );

        strOutput ~= "mixin " ~ __traits( identifier, Mixin ) ~ "!() " ~ strMixinName ~ ";";

        strOutput ~= "static foreach( Member; __traits( allMembers, " ~ strMixinName ~ " ) )";

        strOutput ~= "{";

        strOutput ~= "\tmixin( \"alias \" ~ Member ~ \" = " ~ strMixinName ~ ".\" ~ Member ~ \";\" );";

        strOutput ~= "}";

    }

    return strOutput;

}

​

class LookAtMe

{

    mixin( TheFollowing!( FooOne, FooTwo, FooThree ) );

    final void write( int val )

    {

        foo( val );

    }

    final void write( string val )

    {

        foo( val );

    }

    final void write( float val )

    {

        foo( val );

    }

}

​

static assert( __traits( getOverloads, LookAtMe, "foo" ).length == 3, "Incorrect number of foo overloads! Found " ~ __traits( getOverloads, LookAtMe, "foo" ).length.stringof ~ ", expected 3" );

​

int main( string[] args )

{

     __traits( getOverloads, LookAtMe, "foo" ).length.writeln;

    return 0;

}

​