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

comment on

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

Interesting question! I'd say that unless all of your return statements take some form of return $one, $two, $three;, that's something you could only do at runtime instead of by looking at the source, as it gets less clear how many values will actually be returned in situations like return @foo; or return bar();.

How about something like Hook::LexWrap (see also http://www.perladvent.org/2003/3rd/)? I haven't really used it before but it seems like it should be possible to implement a check like you want:

use Hook::LexWrap 'wrap'; sub my_func { return ("foo") x shift } wrap my_func => post => sub { my $cnt = @{$_[-1]}; # assumes list context! print "Returning $cnt values\n"; }; print my_func(1), "\n"; print my_func(2), "\n"; print my_func(3), "\n"; __END__ Returning 1 values foo Returning 2 values foofoo Returning 3 values foofoofoo

It may also be worth taking a step back: How many returns do you have per sub? What's the largest number of values per return you have? If you've got a lot of returns per sub, then perhaps your logic is getting a little too complex? And if you have a large number of values per return, then perhaps you could look into returning complex data structures instead, like arrayrefs, hashrefs, or objects?


In reply to Re: Checking number of values returned by Anonymous Monk
in thread Checking number of values returned by jfrm

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 perusing the Monastery: (4)
As of 2024-03-30 08:44 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found