On Friday 16 November 2007 17:24, AndrewMcHorney wrote:
> Hello
Hello,
> I now got my directory listing into an array of strings. I would like
> to now split up the string into a an array of strings from the
> original string. For example, I might have a string of "a b c d"
> and I now want a 4 element array containing "a", "b", "c", 'd".
>
> I did the following but it did not work.
>
> @new_dir = @string_array[$index];
Found in /usr/lib/perl5/5.6.0/pod/perlfaq4.pod
What is the difference between $array[1] and @array[1]?
The former is a scalar value, the latter an array slice,
which makes it a list with one (scalar) value. You should
use $ when you want a scalar value (most of the time) and
@ when you want a list with one scalar value in it (very,
very rarely; nearly never, in fact).
Sometimes it doesn't make a difference, but sometimes it
does. For example, compare:
$good[0] = `some program that outputs several lines`;
with
@bad[0] = `same program that outputs several lines`;
The `use warnings' pragma and the -w flag will warn you
about these matters.
John
--
use Perl;
program
fulfillment
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