I assume that adding an extra comma ',' at the end of a param list should be
a syntax error.
the following causes the error
testcomma.d(17): Can only concatenate arrays
class Base {}
class Test : Base
{
 this( char c, ) {}
}

class TestToo
{
 this( char[] c, ) {}
}

int main( char[][] args )
{
 Base[] list;
 list ~= new Test( 'c' );
 list ~= new TestToo( 'this dont work' );
 return 0;
}

interestingly, removing the TestToo class and all refs to it (but leaving
Test with its constructor intact)
and it compiles O.K.

Mike.

its not the ','

its the missing ': Base' from
 class TestToo : Base
which was a typo, and actually the cause in my main source.
if you add that it compiles,

should it with the floating ','s ?


"Mike Wynn" <mike.wynn@l8night.co.uk> wrote in message news:aq1qeo$31at$1@digitaldaemon.com...
> I assume that adding an extra comma ',' at the end of a param list should
be
> a syntax error.
> the following causes the error
> testcomma.d(17): Can only concatenate arrays
> class Base {}
> class Test : Base
> {
>  this( char c, ) {}
> }
>
> class TestToo
> {
>  this( char[] c, ) {}
> }
>
> int main( char[][] args )
> {
>  Base[] list;
>  list ~= new Test( 'c' );
>  list ~= new TestToo( 'this dont work' );
>  return 0;
> }
>
> interestingly, removing the TestToo class and all refs to it (but leaving
> Test with its constructor intact)
> and it compiles O.K.
>
> Mike.
>
>