Perl Interactive Environment: A Complete Tutorial

1 year ago
Liam
1 minute

To create an interactive environment in Perl, you can use the Term::ReadLine module. Here is a simple example code:

use strict;
use Term::ReadLine;

my $term = Term::ReadLine->new('Interactive Perl');

while (defined(my $line = $term->readline('> '))) {
    print "You typed: $line\n";
    $term->addhistory($line);
}

In this example, we import the Term::ReadLine module, then create a Term::ReadLine object. Within an infinite loop, we use the readline method to receive input from the user and print it out. We also use the addhistory method to add the user’s input to the history, allowing the user to access previously entered commands using the up and down arrow keys.

You can save this code into a file and then run it in the terminal. You will see an interactive prompt (>), where you can enter commands and press enter to execute them. You can also use the up and down arrow keys to access previously entered commands.

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