Beefy Boxes and Bandwidth Generously Provided by pair Networks
There's more than one way to do things

Re^2: return undef

by Thilosophy (Curate)
on May 23, 2005 at 04:38 UTC ( #459442=note: print w/replies, xml ) Need Help??

in reply to Re: return undef
in thread return undef

Another useful feature of raising exceptions is that you can pass along the actual error message, which makes debugging much easier.
open $fh, ">$filename" or die "could not open '$filename' for writing: $! "
Also, if you do not write code to catch the exception, your program will terminate with a more meaningful message than "Use of uninitialized value at ... ".

Replies are listed 'Best First'.
Re^3: return undef
by gaal (Parson) on May 23, 2005 at 05:02 UTC
    die now takes more than just strings. You can use first-class objects if you like. This lets you add more structured information about the exception, which also makes catch/propagate decisions less kludgy to implement.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://459442]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others contemplating the Monastery: (6)
As of 2018-06-21 05:47 GMT
Find Nodes?
    Voting Booth?
    Should cpanminus be part of the standard Perl release?

    Results (117 votes). Check out past polls.