i want to change the symbol table entry of a varaible
so that i can continue to use the variable name.
here is a simplistic example.
i've tried the commented lines and more!
what am i missing?
is there another way to do this without using symbolic variables?
the <code> tag doesn't work for me;
so i inserted breaks by hand
my $varA = "this is varA";
my $varB = "this is varB";
my $varC;
print "\n";
## my @vars = ( $varA, $varB, $varC );
my @vars = ( \$varA, \$varB, \$varC );
foreach my $f ( @vars ) {
if ( defined $$f ) {
print "--- $$f \n";
my $tmp = $$f . " and some more ";
print "----- $tmp \n";
no strict 'refs';
## ${$f} = $tmp;
## ${"f"} = $tmp;
## my $ref = \$f; $ref = $tmp;
my $f = \$tmp;
use strict;
print "===== $$f \n";
}
}
print "\n";
foreach my $f ( @vars ) {
print "+ $f \n";
}
print "\n";
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, details, 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, summary, 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: |
| & | | & |
| < | | < |
| > | | > |
| [ | | [ |
| ] | | ] |
Link using PerlMonks shortcuts! What shortcuts can I use for linking?
See Writeup Formatting Tips and other pages linked from there for more info.