Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change

Re: sub returning undef

by Stevie-O (Friar)
on May 24, 2004 at 14:36 UTC ( #355925=note: print w/replies, xml ) Need Help??

in reply to sub returning undef

One problem I see is that 'undef' is an array of one element.

You should return an empty list: (). That will be treated as false by all conditionals (if unless while until).

$"=$,,$_=q>|\p4<6 8p<M/_|<('=> .q>.<4-KI<l|2$<6%s!<qn#F<>;$, .=pack'N*',"@{[unpack'C*',$_] }"for split/</;$_=$,,y[A-Z a-z] {}cd;print lc

Replies are listed 'Best First'.
Re: Re: sub returning undef
by exussum0 (Vicar) on May 24, 2004 at 14:42 UTC

      It would be more appropriate to die on error, and expect the calling code to trap it using:

      eval { # calls go here }; if ($@) { # exception handling here }

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://355925]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others contemplating the Monastery: (4)
As of 2018-03-17 07:06 GMT
Find Nodes?
    Voting Booth?
    When I think of a mole I think of:

    Results (223 votes). Check out past polls.