In the examples below, the variable the declaration of $b without my, local or our works like a global variable. I know this issue will be solved if strictures and warnings are enabled(One would be forced to declare a scope specifier) but without that, the expected behaviour should be that unless you explicitly declare it as 'our' the scope of the variable should end immediately after the curly brace

Shouldn't the default scope be local?

case 1:

$ perl -e 'use Data::Dumper;{my @a=(0..10);$b=\@a} print Dumper $b' $VAR1 = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ];

case 2:

$ perl -e 'use Data::Dumper;{my @a=(0..10);my $b=\@a} print Dumper $b' $VAR1 = undef;

case 3:

$ perl -e 'use Data::Dumper;{my @a=(0..10);local $b=\@a} print Dumper +$b' $VAR1 = undef;

case 4:

$ perl -e 'use Data::Dumper;{my @a=(0..10);our $b=\@a} print Dumper $b +' $VAR1 = [ 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10 ];

In reply to More Scope related questions. by curiousmonk

Title:
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, 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:
    & &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.