module thismodule;

​

class OneClass

{

    this() { }

    this( T )( int a, float b )

    {

        anInt = a;

        aFloat = b;

        ogType = T.stringof;

    }

    int anInt;

    float aFloat;

    string ogType;

}

​

class TwoClass : OneClass

{

    this( double someDouble )

    {

        super.__ctor!double( cast(int)someDouble, cast(float)someDouble );

    }

}

​

int main( string[] argv )

{

    import std.stdio : writeln;

    import std.conv : to;

​

    TwoClass twoclass = new TwoClass( 123.456 );

    writeln( twoclass.anInt.to!string, " <= " ~ twoclass.aFloat.to!string, " (was " ~ twoclass.ogType ~ ")" );

    return 0;

}