On Wed, 20 Feb 2002, Daniel Falkenberg wrote:
> Just wondering how I check if a variable contains nothing or not. I
> thought it was something like the following...
>
> if ( $string eq '' ) {
> print "String contains nothing";
> } else {
> print "The string contains the following: $string";
> }
Yes, that is correct, if the string is an emoty string, as opposed to
being undefined (never assigned to).
An empty string also yields boolean false, so you can say:
if(!$string) {
#...
} else {
#...
}
This is also different from an undefined or uninitialized string, for
which you should do:
if(!defined($string)) {
#...
} else {
#...
}
-- Brett
http://www.chapelperilous.net/
------------------------------------------------------------------------
There are more dead people than living, and their numbers are increasing.
-- Eugene Ionesco
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
