Documentation for routine defined assembled from the following types:

class Mu

From Mu

(Mu) routine defined

Declared as

multi sub defined(Mu --> Bool:D)

invokes the .defined method on the object and returns its result.

class Failure

From Failure

(Failure) method defined

Defined as:

multi method defined(Failure:D: --> Bool:D)

Returns False (failures are officially undefined), and marks the failure as handled.

sub f() { fail }; my $v = f; say $v.defined; # OUTPUT: «False␤»