perl function untie

The untie function in Perl is used to break the connection between a variable and a filehandle, or an object and its class. Once a variable is untied, it is no longer associated with a filehandle or an object. This is commonly used when you want to read or write to a file or object using a different method than what the original filehandle or object was using.

Here's an example of how to use untie to close a filehandle:

# Open a file for reading
open my $fh, "<", "example.txt" or die "Can't open file: $!";

# Read data from the file
my $data = <$fh>;
print $data;

# Close the filehandle using untie
untie $fh;

In this example, we open a filehandle $fh to read data from example.txt. We read a line of data from the file and print it to the screen. Finally, we use untie to close the filehandle.