Perl 6 Deep Dive

The printf method

The printf method prints the values in the given format. It is mostly identical to the printf function from the C and C++ standard library. The first argument of this method is a string describing the format, and the rest of the arguments are the values that will be substituted instead of the directives, starting with the % character in the format string.

In many cases, formatting can be achieved by string interpolation instead. For example, the following two lines produce the same output:

my $temperature = 25.6;
printf("Temperature is %g °C\n", $temperature); 
say "Temperature is $temperature °C"; 

In the following tables, the main formatting directives are listed.