On Friday 09 July 2004 08:14, Christopher J. Bottaro wrote:
>
> i want to remove items from a hash then later see if they exist using
> defined(). for example:
>
> delete($hash{MYKEY});
> # blah blah
> if (defined($hash{MYKEY})) {
> # do blah blah
> }
>
> which should i use? delete() or undef()? obviously i could write a
> small script to test this (which i'm going to know), but i'd also
> like to hear from an expert about the subtle (if any) difference
> between the two if they both work.
This is a Frequently Asked Question which can be found in the perlfaq4 document.
perldoc -q "What's the difference between \"delete\" and \"undef\" with hashes"
John
--
use Perl;
program
fulfillment
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
<http://learn.perl.org/> <http://learn.perl.org/first-response>
