Using if statement to check if a variable has been defined : If « Statement « Perl






  1. Perl
  2. Statement
  3. If

Using if statement to check if a variable has been defined

   

$variable1 = 5;
undef $variable1;

if (defined $variable1) {
    print "\$variable1 is defined.\n";
} else {
    print "\$variable1 is not defined.\n";
}








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