$a is exempt from strict checking, so let's use a different variable name. Let's enable the pragmas
strict and
warnings to point out mistakes that beginners are liable to make. I'll demonstrate that the eval statement is a red herring, it can be removed and the same problem still shows: "Global symbol "$aa" requires explicit package name at…"
#!/usr/bin/env perl
use strict;
use warnings;
sub get_accounts {
print $aa;
}
my $aa = 5;
get_accounts();
Lesson to learn: pass parameters to functions, do not rely on lexical variables leaking into the function from an outer scope. (Globals are okay.) To help enforce this through coding style, always place subroutine definitions before the main part of the code.
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.