Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine
 
PerlMonks  

Re: how to get alias name of anonymous sub?

by ruoso (Curate)
on Nov 29, 2010 at 10:24 UTC ( #874220=note: print w/ replies, xml ) Need Help??


in reply to how to get alias name of anonymous sub?

As noone seem to have pointed already, there's one important module on that subject which is Sub::Name. It should allow you to:

use Sub::Name foreach (keys %news_sites) { *{$_} = subname "generator_for_$_" => sub {...} }

But note that you seem to be missing one more important concept here, which is the concept of closures

foreach my $key (keys %news_sites) { *{$key} = sub { ... # as the $key variable was declared in the outer scope of the s +ubroutine, # if the code reference survives longer than this scope it will + retain its # value warn $key; # this will warn the value used when defining this s +ub. } }
daniel


Comment on Re: how to get alias name of anonymous sub?
Select or Download Code
Re^2: how to get alias name of anonymous sub?
by gian (Novice) on Nov 29, 2010 at 16:49 UTC
    I really missed the closures.Thanks for your remind.I heard the concept of closures before,but I could't find the usage of it in perl , so i did't understand it very much . I think this a good example for me.Thanks ruoso.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://874220]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chanting in the Monastery: (8)
As of 2014-07-29 21:40 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My favorite superfluous repetitious redundant duplicative phrase is:









    Results (228 votes), past polls