Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
You misunderstand my question. Here $self is a proper object, blessed. It seemed not too enlightening to list the new function of the object ( it is well known how to do it ). However here it is in full detail:
Package MyObject; sub new { my $self={ hash_ref=>{key1=>'value1',key2=>'value2'} }; bless $self; return $self; } #global variable to access $self my $sort_self; sub byvalue { $sort_self->{hash_ref}->{$a}<=>$sort_self->{hash_ref}->{$b}; } sub sort_hash_ref_keys_by_value { my $self=shift; #set global variable by hand $sort_self=$self; #now the cmp function knows the object my @keys_sorted_by_value=sort byvalue keys(%{$self->{hash_ref}}); } Packahe Main; my $myobject=new MyObject; $myobject->sort_hash_ref_keys_by_value;
I want more than simply sorting the keys. Based on the keys I have to look up something within the object based on which I can sort the keys. For this I have to access the object's variables. Currently I create a global variable called $sort_self and I set this manually before calling the user defined cmp function byvalue, but this seems very unelegant.

In reply to Re^2: How can I access object data in a user defined sort cmp function? by tkguifan
in thread How can I access object data in a user defined sort cmp function? by tkguifan

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 or How to display code and escape characters are good places to start.
Log In?

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

How do I use this? | Other CB clients
Other Users?
Others wandering the Monastery: (4)
As of 2022-06-25 05:29 GMT
Find Nodes?
    Voting Booth?
    My most frequent journeys are powered by:

    Results (81 votes). Check out past polls.