croak will say the error was in process_something's caller if process_something was called from another package. For example,
use strict;
use warnings;
package Module;
use Carp qw( croak );
my %handler = (
foo => sub { ref $_[0] eq 'ARRAY' or croak "foo key takes a hashref
+"; 1 },
bar => sub { $_[0] =~ /wibble$/ or croak "bar key must end with 'wi
+bble'"; 1 },
);
sub process_something {
my %arg = @_;
my @results;
while( my ( $elem, $param ) = each %arg ) {
push @results, $handler{ $elem }( $param );
}
}
package main;
Module::process_something( foo => 'a' ); # <-- line 27.
outputs
foo key takes a hashref at 554371.pl line 27
-
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.
|