Beefy Boxes and Bandwidth Generously Provided by pair Networks
Come for the quick hacks, stay for the epiphanies.
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??

Something changed in 5.22. $My::{$symbol} can return a code reference or -1 instead of a glob.

The following is therefore needed:

sub get_code_ref_by_fqn { # Fully qualified name my ($fqn) = @_; my @pkg_name_parts = split /::/, $fqn; my $symbol = pop(@pkg_name_parts); my $pkg = \%::; for (@pkg_name_parts) { $pkg = $pkg->{$_.'::'} or return undef; } my $glob_or_code = $pkg->{$symbol} or return undef; return $glob_or_code if ref($glob_or_code); return undef if ref(\$glob_or_code) ne 'GLOB'; return *$glob_or_code{CODE}; }

But you know what, let's just leave those dirty details to Perl.

sub get_code_ref_by_fqn { # Fully qualified name my ($fqn) = @_; no strict qw( refs ); return undef if !defined(&$fqn); return \&$fqn; }

Above tested using

use 5.012; use warnings; sub Foo::Bar::y; sub Foo::Bar::z { } say get_code_ref_by_fqn('Foo::Bar::x') // '[undef]'; say get_code_ref_by_fqn('Foo::Bar::y') // '[undef]'; say get_code_ref_by_fqn('Foo::Bar::z') // '[undef]';

In reply to Re^4: accessing stashes by ikegami
in thread accessing stashes by morgon

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • 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.
Log In?
Username:
Password:

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

How do I use this?Last hourOther CB clients
Other Users?
Others meditating upon the Monastery: (6)
As of 2024-03-28 13:15 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found