On Wednesday, July 10, 2002, at 09:29 AM, George Schlossnagle wrote:
>> and, as someone pointed out, this does work:
>> $x = ['abc','def','ghi'];
>> print @$x[2]."\n"; # prints 'ghi'
>
>
> Am I alone in thinking that $x->[2] is much more readable that @$x[2]
> or $$x[2]?
i was only saying that it was allowable. not that is desirable to do it
that way. i agree with your preference.
>
>>
>> but i couldn't tell you how perl reads this, except to say that '@$x'
>> dereferences and then '[2]' gets the array element.
>> but i don't know why a '$' isn't needed to tell perl you want the scalar
>> value of that element.
>
> @$x[2] works the same way that if you have
>
> @b = ('abc','def','ghi');
> print "@b[2] == $b[2]\n";
>
> @b[2] is an array slice with a single element (which strangely seems to
> get auto-cast as a scalar).
>
except i get a warning on this use:
@y = ('a','b','c');
print @y[2]."\n";
>Scalar value @y[2] better written as $y[2] at ./tst line 4.
>c
i don't get that warning when it is an array ref.
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