Getting the Perl representation of the value

The perl method returns a string that can represent the Rat value as Perl 6 understands it in the source code. The result can either contain a decimal point or a slash, depending on what is better for precise representation of the value.

Consider a couple of examples that display the preceding idea:

my $x = 1/3;
say $x.perl; # <1/3>

my $y = 1/2;
say $y.perl; # 0.5

say 10/20.perl; # 0.5