Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl-Sensitive Sunglasses
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
Yes, there is a way to avoid this. Starting from Perl 5.8, you can use the lock_keys function provided in Hash:Util package, to lock your attributes, after you initialized them. One example here:
ex10.pm: package ex10; use Hash::Util; sub new { my $self = {}; $self->{ATTR_ABXCDEFG} = 1; $self->{ATTR_ABCXDEFG} = 2; $self->{ATTR_ABCDXEFG} = 3; $self->{ATTR_ABCDEXFG} = 4; $self->{ATTR_ABCDEFXG} = 5; bless($self); Hash::Util::lock_keys(%{$self}); return $self; } sub do_something_1 { my $self = shift; $self->{ATTR_ABCXDEFG} = 10; } sub do_something_2 { my $self = shift; print $self->{ATTR_ABCXDEFG}; } sub do_something_3 { my $self = shift; $self->{ATTR_AXBCDEFG} = 10; } sub do_something_4 { my $self = shift; print $self->{ATTR_AXBCDEFG}; } 1; ex10.pl: use ex10; $e = new ex10; $e->do_something_1; $e->do_something_2; $e->do_something_3; #see what will happen, if you comment out this $e->do_something_4; #try to comment out this

In reply to Re: how to avoid mis-spelling hash keys? by pg
in thread how to avoid mis-spelling hash keys? by Gorilla

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!
  • 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
  • Outside of code tags, you may need to use entities for some characters:
            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?
    Username:
    Password:

    What's my password?
    Create A New User
    Chatterbox?
    and the web crawler heard nothing...

    How do I use this? | Other CB clients
    Other Users?
    Others taking refuge in the Monastery: (10)
    As of 2014-08-28 06:11 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      The best computer themed movie is:











      Results (257 votes), past polls