03-Oct-2013 07:37, Andrei Alexandrescu пишет:
On 10/2/13 8:14 PM, deadalnix wrote:
On Thursday, 3 October 2013 at 02:21:19 UTC, Andrei Alexandrescu wrote:
On 10/2/13 10:06 AM, Dicebot wrote:
[snip]
Or more generally cope statement at the end of a scope.
I'm cautious about that; that's why I specified "unbraced". Consider:
if (lily)
{
scope(exit) writeln("Lily was here.");
// fun();
}
This code is a plausible edit of work that was meaningful and in which
the programmer has temporarily commented out the call to fun. If the
compiler would obnoxiously protest that the edited code can't compile,
that may be more aggravation than win for the user.
In contrast, this is no simple edit of any sensible code:
if (lily)
scope(exit) writeln("Lily was here.");
Here, the compiler is much more within its rights to demand a code
change, either to
scope(exit) if (lily) writeln("Lily was here.");
or
if (lily) writeln("Lily was here.");
Truth be told I'd be _very_ cautious of the tiny special cases like
this, they make generating D code (including at CTFE) a PITA.
--
Dmitry Olshansky
