IO::Simple

IO::Simple is a Perl module that provides a simplified layer over IO::File. This layer causes files to open by default in read mode and will quit on failure when opening, closing or printing files. It also provides methods to set $, $/, $:, $^L and $, on a per handle basis, as well as a slurp function.

The SYNOPSIS of IO::Simple is straightforward. You can export the file method with the following code:

use IO::Simple ':all';

This module then provides options that allow for greater control over input and output handling. For example:

my $fh = file('test.txt', 'w');

This line of code will quit if the file cannot be opened. The following three lines will demonstrate the behavior when writing a line to test.txt:

$fh->say("This is a line");
$fh->print("This has no new line!!!");
$fh->close();

This module also provides the slurp function which allows the contents of a file to be read with a single call:

my $contents = file('test.txt')->slurp();

For those who prefer the class method, IO::Simple can also be used:

use IO::Simple;
my $fh = new IO::Simple('test.txt');

Overall, IO::Simple simplifies reading and writing to files in Perl, while still providing full control over file handling.