Beefy Boxes and Bandwidth Generously Provided by pair Networks
Keep It Simple, Stupid
 
PerlMonks  

Re^2: undef/defined &{$name} while "strict refs"

by anazawa (Scribe)
on Aug 21, 2012 at 03:22 UTC ( #988560=note: print w/ replies, xml ) Need Help??


in reply to Re: undef/defined &{$name} while "strict refs"
in thread undef/defined &{$name} while "strict refs"

Thanks to your explanation, I understand "strict refs" allows the following:

my $runable = \&{ 'run' }; &$runable;
Your code shows how we avoid throwing exceptions. I think, however, it's still unclear why defined/undef &{ 'run' } doesn't throw exceptions while "strict refs".


Comment on Re^2: undef/defined &{$name} while "strict refs"
Select or Download Code
Replies are listed 'Best First'.
Re^3: undef/defined &{$name} while "strict refs"
by Anonymous Monk on Aug 21, 2012 at 06:43 UTC

    I think, however, it's still unclear why defined/undef &{ 'run' } doesn't throw exceptions while "strict refs". ,/i>

    Have you read what strict says about refs?

    Please read it now

      The POD says we are allowed to get a reference to CODE using symbolic references while "strict refs". I think this doesn't mean we can defined or undef subroutines as well. I may be misreading the document.

        I think this doesn't mean we can defined or undef subroutines as well.

        I don't understand what you're saying here

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://988560]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others pondering the Monastery: (9)
As of 2015-07-31 00:39 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (274 votes), past polls