Can I limit my Perl 6 program to work with a specific implementation?

Question

dd is a normal Rakudo function, but this is related to my question. Is there a way inside the program to check the implementation and help out if it is not correct? Should I do it on my own?

die "Unsupported VM" unless $*VM ~~ m/^ 'moar' /; 

Maybe we need something like Perl 5 Devel :: AssertOS .

I am not at all interested in creating programs specific to the implementation, but I can imagine cases when one implementation has special features and errors that are incompatible with the program. Because, you know, it has been Java for several years (remember MRJ ?).

Answer 1

If you want to run your program only on MoarVM, then:

 die "Must run on MoarVM, not $*VM.name()" unless $*VM.name eq 'moar'; 

should be enough.