[boost] It's a digraph. (was: Re: Interest in an ODBC library?)

From: Daryle Walker (darylew_at_[hidden])
Date: 2005-08-19 08:02:00

On 8/18/05 4:57 AM, "Jonathan Wakely" <cow_at_[hidden]> wrote:

> postgresql/connect.cpp accidentally uses the <:: trigraph in the
> typedefs at the top of the file.  You need a space before the template
> args to avoid that.

I think you mean the "<:" digraph.  It represents the "[" (opening square
bracket) character.  The official term is "alternative token" (see section
2.5 of the standard), because some of the tokens have more than two
characters.  (These include the bitwise and Boolean word operators, i.e.
"and".)  They're considered after the preprocessor (phase 3 of section 2.1),
and trigraphs are done earlier than that (in phase 1).

-- 
Daryle Walker
Mac, Internet, and Video Game Junkie
darylew AT hotmail DOT com