Re: for(sort@a){...} affects @a

[Yanick]

On Thu, Apr 11, 2002 at 09:04:22AM -0400, Karger, Amir wrote:
> I get the same result as you (aBcD) when I run 5.6.1 on solaris. So it looks
> like the aliasing mechanism switched from 5.004 to 5.6.1.

        I get the same behavior:

$ perl -v
This is perl, v5.6.1 built for i386-linux
$ perl -le'%a = qw/ a b c d/; s/./uc$&/e for %a; print %a'
aBcD

        And this one really takes the cake. Keys are modified,
but not values... But wait! There is more!

$  perl -le'%a = qw/ a b c d/; s/./uc$&/e for values %a; print %a'
aBcD
$  perl -le'%a = qw/ a b c d/; s/./uc$&/e for keys %a; print %a'
abcd

So if you specify the values, you can modify them. But if you
specify the keys, you can't.

        Anyone's longing for a straight-jacket, yet? 

Joy,
`/anick

-- 
($_,$\,@_  )=(   'Yeta onhterPrce h leark',      "\n",split'',
'movfgmqjnelophrthuffrtoeqerpgvnhplgusujgkmlqesatokwlvpkwdasn' );
 $i=-97+ord$a,s/(?<=.{$i})(.)(.)/$2$1/,print while$a=shift@_;