since --> is the preferred way to state the return type in a signature in perl6 I am wondering if or how it is possible to put the code of a function signature into C<...>.
-->
C<...>
e.g. C<foo(Int $a --> Bool)>
C<foo(Int $a --> Bool)>
You can use C<<foo(Int $a --> Bool)>>.
C<<foo(Int $a --> Bool)>>