Beefy Boxes and Bandwidth Generously Provided by pair Networks
more useful options
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??

Using a string as a subroutine name is almost always a bad idea. What you want instead is a "dispatch table", that is, a hash that maps your names to subroutines:

#!/usr/local/bin/perl -w use strict; sub test1 { print 'test1'; } sub test2 { print 'test2'; } for my $i (1,2) { my $name = "test$i"; if (exists $handler{$name}) { $handler{$name}->(); } else { warn "Don't know what to do with '$name'"; }; }; my %handler = ( test1 => \&test1, test2 => \&test2, );

This method allows you to extend your program while also giving you good error handling in the case that you want to call something by name which doesn't exist. It also makes your program more secure because only things can be called that you have specified as callable.


In reply to Re: How to sovle this, if i use strict i'm getting error. by Corion
in thread How to sovle this, if i use strict i'm getting error. by sen

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 lurking in the Monastery: (8)
    As of 2014-10-24 23:31 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      For retirement, I am banking on:










      Results (138 votes), past polls