handling Throw exception in Perl

In Perl, you can throw an exception by using the die function. This function prints the specified message to STDERR and terminates the program.

Here is an example of how to throw an exception in Perl:

my $num = 10;
if ($num > 5) {
   die "Error: The number is too large";
}

In this example, the die function is used to throw an exception when the value of $num is greater than 5. The message "Error: The number is too large" will be printed to STDERR and the program will terminate.

You can also catch exceptions using the eval function. Here is an example:

eval {
   my $num = 10;
   if ($num > 5) {
      die "Error: The number is too large";
   }
};
if ($@) {
   print "Caught exception: $@\n";
}

In this example, the eval function is used to catch the exception that is thrown by the die function. If an exception is thrown, the $@ variable will contain the error message and can be printed using the print function.