Re^3: printing the subscript separator

~~Perhaps you could be more descriptive :)~~

Update: That's zero or more space characters from start to end... in other words... either nothing (no chars) or all whitespace.

my $var = '';
That will not be caught by /^\s+$/

Comment on Re^3: printing the subscript separator Download Code

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Re^4: printing the subscript separator by jacques (Priest) on Feb 09, 2005 at 18:29 UTC
But it would be caught by the if statement since it checks if $operator is not defined. Update: I was thinking of 'false'.	[reply]
Re^5: printing the subscript separator by Fletch (Bishop) on Feb 09, 2005 at 18:34 UTC
An empty string is defined; only `undef` is undefined. `freebie:~ 663> perl -le 'print "defined" if defined ""' defined` [download]	[reply] [d/l] [select]
Re^6: printing the subscript separator by jacques (Priest) on Feb 09, 2005 at 18:37 UTC
Correct!! I was thinking of 'false'. Whoops.	[reply]
Re^5: printing the subscript separator by RazorbladeBidet (Friar) on Feb 09, 2005 at 18:35 UTC
It is defined. `$operator = '';` [download] Contains no whitespace, yet it's defined... not sure where that falls in your original criteria (my guess is you don't want it)	[reply] [d/l]