Show that 'is default' can be used also with arrays and hashes.
Show that 'is default' can be used also with arrays and hashes.

Close #1687

antquinonez/doc,stmuk/doc,jonathanstowe/doc,gfldex/doc,MasterDuke17/doc,dmaestro/doc,gfldex/doc,tbrowder/doc,jonathanstowe/doc,perl6/doc,perl6/doc,jonathanstowe/doc,antquinonez/doc,dmaestro/doc,antquinonez/doc,gfldex/doc,stmuk/doc,tbrowder/doc,MasterDuke17/doc,tbrowder/doc,antquinonez/doc,jonathanstowe/doc,tbrowder/doc,stmuk/doc,perl6/doc,gfldex/doc,dmaestro/doc,MasterDuke17/doc,perl6/doc,dmaestro/doc,antquinonez/doc,stmuk/doc,jonathanstowe/doc,perl6/doc,MasterDuke17/doc,gfldex/doc,stmuk/doc,dmaestro/doc