Writing to a stream

In this section, we will examine methods that the IO::Handle class offers for writing to a stream.

The print  function

We will start with the simple print function. Basically, its usage is obvious. It prints the text to the stream. In the case of standard output, use the bare print function or the $*IN.print method. If you work with a file, use its file handle.

The following program creates a file named hello.txt and writes a string to it.:

my $fh = open 'hello.txt', :w; # Open a file for writing
$fh.print('Hello, World');     # Print to the file
$fh.close;                     # Close the file so that the data is saved

If the file already exists, it will be re-written, and all previous contents will be lost. Use the :a append mode if you need to append new output to an existing file:

my $fh = open 'hello.txt', :a; # Open in append mode
$fh.print('!');                # Now the file contains 'Hello, World!'
$fh.close;

The close method closes a file. Actually, this does not need...