On Mon, Aug 10, 2009 at 11:22, Bryan R Harris<bryan_r_har...@raytheon.com> wrote: snip > I think it's saying that just like: > > $a += 2; > > is the same as: > > $a = $a + 2; > > similarly: > > $a ||= 3; > > is the same as: > > $a = $a || 3; > > ... implying if $a is false, $a gets set to 3, otherwise it stays at > whatever it was. snip
That is exactly what it is saying. The problem Shawn is pointing out is that it requires you to 1. read about what += does 2. infer the behavior of ||= from that 3. then look up what || does All of that is fine if you are reading perlop from start to finish, but if you are trying to use it as a reference guide (by searching for what you want to know about) it can lead to confusion and a belief that it is not documented. Perhaps we need a perlopref or perlopquick like this: =head2 C<||> Performs a short-circuit logical OR operation. That is, if the left operand is true, the right operand is not even evaluated. Scalar or list context propagates down to the right operand if it is evaluated. =head2 C<<< X >>= Y >>> This is equivalent to C<<<X = X >> Y>>> see, C<<< >> >>> and C<=> for more information. =head2 C<X ||= Y> This is equivalent to C<X = X || Y>, see C<||> and C<=> for more information. =head2 C<X .= Y> This is equivalent to C<X = X . Y>, see C<.> and C<=> for more information. Sounds like yet another side project for me. -- Chas. Owens wonkden.net The most important skill a programmer can have is the ability to read. -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
