Beefy Boxes and Bandwidth Generously Provided by pair Networks RobOMonk
Think about Loose Coupling
 
PerlMonks  

Comment on

( #3333=superdoc: print w/ replies, xml ) Need Help??
I'm definitely not a fan of this call-style. My prefered syntax for accessor/mutators is to have a single method which sets the value if passed a parameter and always returns the current value. This yields calls that read easily and behave in a consistent manner. If $train->speed returns the speed of the train why would $train->speed(10) return the train? It only makes sense if you're already familar with the syntax hack it supports, which isn't even in common usage! Hello maintainance nightmare.

I find the argument (put forth by others) that returning an object on success or undef on failure aids debugging to be totally bogus. Let's take your example:

print SOAP::Lite -> uri('http://www.soaplite.com/Temperatures') -> proxy('http://services.soaplite.com/temper.cgi') -> f2c(32) -> result;

What happens if f2c() fails? Fatal error with a strange error message. What happens if result() fails? Nothing! Maybe you get a warning, but you certainly don't get an error. It's much, much better if mutators croak() if they can't perform their duty. Then error checking is entirely optional, yet still available via eval{}.

-sam

PS: All that said, I'm still a big fan of SOAP::Lite. It's got its quirks, but it gets the job done. To all the SOAP::Lite haters in the audience (and I know you're out there) I'm eagerly awaiting your complete SOAP implementations!


In reply to Re: chaining method calls by samtregar
in thread chaining method calls by perrin

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!
  • 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
  • Outside of code tags, you may need to use entities for some characters:
            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 chanting in the Monastery: (10)
    As of 2014-04-20 22:01 GMT
    Sections?
    Information?
    Find Nodes?
    Leftovers?
      Voting Booth?

      April first is:







      Results (488 votes), past polls