Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
But what about close? I mean, I know *when* it happens: when $fh goes out of scope. That's the point if this construct. But how does it happen, in terms of error catching? I almost always want to handle errors on close. How do I express that using this syntax? (Where do I hook up my "or die"?)

Honestly, I'd do it explicitly. Depending on scoping rules for resource management isn't exactly the most obvious WTDI, although the bare block does make the point pretty well. Putting in an explicit close $fh or die "close: $!"; lets everyone reading your code know that, yes, you have thought about it, and dealt with it as you saw fit -- that you didn't forget to do something clever if close failed.

(On the other hand, I've never actually had close fail. Not that that's an excuse for not checking a system call's return value, of course. :-)

--
F o x t r o t U n i f o r m
Found a typo in this node? /msg me
% man 3 strfry


In reply to Re: Catching errors in closing lexical filehandles by FoxtrotUniform
in thread Catching errors in closing lexical filehandles by gaal

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 cooling their heels in the Monastery: (5)
As of 2024-06-15 16:43 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found

    Notices?
    erzuuli‥ 🛈The London Perl and Raku Workshop takes place on 26th Oct 2024. If your company depends on Perl, please consider sponsoring and/or attending.