As an example of package-global versus lexical naming rules and also
the scoping effects touched on elsewhere in this thread, consider:
Win8 Strawberry 5.8.9.5 (32) Wed 04/28/2021 19:35:55
C:\@Work\Perl\monks
>perl -l
use strict;
use warnings;
our $foo = 'package global';
{ # begin scope
my $foo = 'lexical';
print 'A: ', $foo;
print 'B: ', $::foo;
print 'C: ', $main::foo;
} # end scope
^Z
A: lexical
B: package global
C: package global
Now try the code without the
{ ... } scope. Is there any
difference? If so, why? Is there any way to do without the
our declaration in the
our $foo = 'package global';
assignment statement? Is there any reason to avoid
our? See
also
perldata.
Give a man a fish: <%-{-{-{-<
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.