Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw

comment on

( #3333=superdoc: print w/replies, xml ) Need Help??
Thank you jo37 for your work!
This is not true, it gives (99).

Sorry, I had an error in my test script. Now I also get 99.

Your example made me understand that a prototype also defines the context (scalar/list) for the evaluation of the arguments.

My point is that the function split is not fully described in the Perl documentation

  • Reading index-functions I get the impression that split is a function.
  • In perlsub is stated:
  • The Perl model for function call and return values is simple: all functions are passed as parameters one single flat list of scalars, and all functions likewise return to their caller one single flat list of scalars. ...
  • The function prototype returns the prototype of a function as a string (or undef if the function has no prototype).
    prototype "CORE::split" returns undef (Thanks LanX )

My conclusion from this is that split is a Perl sub, without prototype.

I have however realized that:

  • Split's first argument, /PATTERN/, is not evaluated immediately. In some way it is kept for later usage.
  • The rest of the arguments are not treated like a Perl sub without prototype.

Somewhere in split this differences from a normal Perl sub should be included. As split behaves more like an operator it is perhaps better to call it an operator. It is also implemented as an operator and not as a Perl sub.

In reply to Re^2: My problems to understand the Perl documentation by bojinlund
in thread My problems to understand the Perl documentation by bojinlund

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 chanting in the Monastery: (2)
As of 2022-05-27 01:06 GMT
Find Nodes?
    Voting Booth?
    Do you prefer to work remotely?

    Results (94 votes). Check out past polls.