Grant Hansen wrote:
> 
> What is the ! doing in this statement?
> 
> $quit = 0;
> while (! $quit)

That is the logical not operator.  It says 'loop while $quit is not true
(false)' where not true is either undef, 0, '0' or ''.  It could also be
written as:

until ( $quit ) {

Read about this and other operators in the perlop document.

perldoc perlop



John
-- 
use Perl;
program
fulfillment

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