On 11/16/09 Mon Nov 16, 2009 1:23 PM, "Jackie Jackie" <j_jacki...@yahoo.ca> scribbled:
> What this means > > if( ! length() ) It means evaluate the expression '! length()' in a scalar context, interpret the value as a logical expression, and branch accordingly. ! is the not operator. length() is the length operator applied to the default variable $_ and returning some non-negative integer (0 or more). A zero value will be considered false, and any value greater than zero will be considered true. The ! operator reverses these values. Thus, if the variable $_ contains a blank string, the statements after the if() statement will be executed. If $_ contains any characters, the statements will be skipped down to the first else or elsif statement. -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
