Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask
 
PerlMonks  

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
I'm not clear on what you want to do, but if you want to pass the return value of func1() to func2() and the return value of func2() to func3() then you just have to:
func3( func2( func1() ) );

if you're looking to abuse some perl internals, then you can using the special variable @_ and function passing using &subroutine.
When you call a function like this: &foo; foo is passed the current value of @_. Also, did you know that manipulating @_ inside a function actually manipulates the passed variables? Kinda like pass by reference in c. check this out:
use subs qw/foo bar baz/; @_ = ( 1, 2, 3, 4 ); &foo; # sends current contents of @_ print join(' ', @_), "\n"; &bar; # sends current contents of @_ print join(' ', @_), "\n"; &baz; # sends current contents of @_ print join(' ', @_), "\n"; &baz(); # sends an empty list print join(' ', @_), "\n"; sub foo { map { $_++; } @_; # map actually changes the values in @_ } sub bar { map { $_+=2 } @_; # again, map changes @_ } sub baz { map { $_--; } @_; # also chainging @_; }

I don't know which you're trying to accomplish, but becareful using these tricks as it could have unwanted side effects. Also note that calling a sub routine like this: &foo() over rides the default behaviour of passing @_ to the function and sends it an empty list ().

hope that helps,
-brad..

In reply to Re: Style & subroutine organization by reyjrar
in thread Style & subroutine organization by camelman

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



  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.
  • Log In?
    Username:
    Password:

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

    How do I use this? | Other CB clients
    Other Users?
    Others exploiting the Monastery: (10)
    As of 2019-12-16 12:23 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      No recent polls found

      Notices?