Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??

G'day Bindo,

You seem to have your answer with respect to "... main rational here is to understand hash behavior in subs.". This is additional information, regarding your example code, which you may find useful.

Here's a much more succinct way to generate the output you want:

$ perl -Mstrict -Mwarnings -le ' while (my @pwent = getpwent()) { next if $pwent[2] <= 500; print join " --> ", @pwent[0,7]; } ' ... ken --> /Users/ken ...

In addition to getpwent() (which iterates through all records), there's also getpwnam() (which returns a single record based on username), getpwuid() (which returns a single record based on numeric user ID) and other related functions.

While the online documentation (Fetching user and group info) lists these functions, it provides little in the way of details (return values are not even shown). For that, you can use:

perldoc -f getpwent

-- Ken

In reply to Re: Retunining hash values from subroutines by kcott
in thread Retunining hash values from subroutines by Bindo

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?

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 taking refuge in the Monastery: (3)
As of 2023-10-02 21:41 GMT
Find Nodes?
    Voting Booth?

    No recent polls found