Optimising Perl 6
Optimised v2 runs 16-17% faster than the basic version.
Optimised v3
Use of uninitialized value of type Any in numeric context
in block at fib.pl6 line 28
Use of uninitialized value of type Any in numeric context
in block at fib.pl6 line 28
Use of uninitialized value of type Any in numeric context
in block at fib.pl6 line 28
Use of uninitialized value of type Any in numeric context
in block at fib.pl6 line 28