As NetWallah notes, you want to use a dispatch table, as it allows you to check for the existance of the sub before you call it (one of the "various valid reasons relating to maintainability and security"). However, there is no need to have to deal with such annoying syntax. Check out Exporter::Dispatch on the CPAN. It will make your life much easier. For instance, NetWallah's sample now becomes even cleaner. First the table definition: (with the prototypes removed, as they are pointless in this situation)
package Options;
use Exporter::Dispatch;
sub main_menu {
...
}
sub other_menu {
...
}
And then the call (with the addition of an existance check):
my $var = ...;
my %dispatch_sub = create_dptable Options;
$dispatch_sub{$var}->($screenpos1, $screenpos2) if exists $dispatch_su
+b{$var};
-
Are you posting in the right place? Check out Where do I post X? to know for sure.
-
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big>
<blockquote> <br /> <dd>
<dl> <dt> <em> <font>
<h1> <h2> <h3> <h4>
<h5> <h6> <hr /> <i>
<li> <nbsp> <ol> <p>
<small> <strike> <strong>
<sub> <sup> <table>
<td> <th> <tr> <tt>
<u> <ul>
-
Snippets of code should be wrapped in
<code> tags not
<pre> tags. In fact, <pre>
tags should generally be avoided. If they must
be used, extreme care should be
taken to ensure that their contents do not
have long lines (<70 chars), in order to prevent
horizontal scrolling (and possible janitor
intervention).
-
Want more info? How to link
or How to display code and escape characters
are good places to start.
|