Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask

Comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

Have you tried? You need some extra braces in there, and need to drop the second my, but other than that your code works...

my @names = qw(A B C D); for (my $i=0; $i<4; $i++) { @{$names[$i]} = $i; } use Data::Dumper; print Dumper(\@A, \@B, \@C, \@D);

These are called symbolic references. It is forbidden by the strict parameter because it's usually a bad idea. That's not to say it's always a bad idea; strict refs is just about the only part of strict that's occasionally worth disabling (occasionally, in a small lexical scope).

There are usually better ways of doing it. Here's one way, using a hash of arrays:

use strict; my %ARRAYS; my @names = qw(A B C D); for (my $i=0; $i<4; $i++) { @{ $ARRAYS{$names[$i]} } = $i; } use Data::Dumper; print Dumper(@ARRAYS{@names});

Here's another way using hard references instead of symbolic references:

use strict; my (@A, @B, @C, @D); my @names = (\@A, \@B, \@C, \@D); for (my $i=0; $i<4; $i++) { @{$names[$i]} = $i; } use Data::Dumper; print Dumper(\@A, \@B, \@C, \@D);
perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'

In reply to Re: Variable as name of array by tobyink
in thread Variable as name of array by Hopfi

Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":

  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?

    What's my password?
    Create A New User
    and all is quiet...

    How do I use this? | Other CB clients
    Other Users?
    Others chilling in the Monastery: (5)
    As of 2018-05-25 11:48 GMT
    Find Nodes?
      Voting Booth?