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;

    }

}

​

class LookAtMe

{

    mixin FooOne!();

    mixin FooTwo!();

    mixin 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" );

​