In Perl, to import another file or module, we use the use keyword followed by the name of the module or file to be imported. The module or file should be in the same directory as the current script or included in the Perl library path.
Here is an example of how to import a file called "person.pm" containing a Person module:
# importing person.pm module
use Person;
# creating an instance of the Person class
my $person = Person->new("John", "Doe", 30);
# calling a method on the object
$person->greet();
In the above example, we use the use keyword to import the Person module defined in the "person.pm" file. We then create an instance of the Person class and call the greet method on the object.
Alternatively, we can use the require statement to import a file or module at runtime. Here is an example:
# importing the important_module.pm module at runtime
require 'important_module.pm';
# calling a method from the important_module
important_function();
In the above example, we use the require statement to import the "important_module.pm" at runtime. We then call a function named important_function() defined in the imported module.