Re: [boost] [iostreams]ANNOUNCE:indent_filtering_ostream.zip in vault

Subject: Re: [boost] [iostreams]ANNOUNCE:indent_filtering_ostream.zip in vault
From: dherring_at_[hidden]
Date: 2010-01-13 15:16:43

On Wed, 13 Jan 2010, Larry Evans wrote:

> On 01/13/10 13:46, Larry Evans wrote:
> [snip]
>> IIRC, the last element printed in a struct has no trailing
>> nl.  The task of appending the nl is left to the caller.  This
>> protocol is illustrated by the attachment,
>
> Actually, the new attachment looks remarkably similar to your's
> except, instead of:
>
>   << nl << element << "\n";
>
> there's:
>
>   << "\n" << element;
>
> and there's no special case to test for the last element.
> IOW, the newlines prefix each element on the
> statement instead of trail each element.

Yes, newline prefix is preferred when newlines trigger indentation.

I'll try to get a more detailed reply; but time's tight right now.  One 
thing to note: my previous example was meant to show the problem with 
mixing prefix and postfix newlines.  The following output shows the value 
of a newline without indentation.

"
namespace N
{
   struct S1
   {
     int x;
   };

   struct S2
   { ... };
}
"

Note the blank line between S1 and S2.

- Daniel