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self
Combined from primary sources listed below.

In Terms§

See primary documentation in context for term self.

Inside a method, self refers to the invocant (i.e. the object the method was called on). If used in a context where it doesn't make sense, a compile-time exception of type X::Syntax::NoSelf is thrown.

In Failure§

See primary documentation in context for method self. 

method self(Failure:D: --> Failure:D)

If the invocant is a handled Failure, returns it as is. If not handled, throws its Exception. Since Mu type provides .self for every class, calling this method is a handy way to explosively filter out Failures:

my $num1 = '♥'.Int; # $num1 now contains a Failure object, which may not be desirable  my $num2 = '♥'.Int.self; # .self method call on Failure causes an exception to be thrown  my $num3 = '42'.Int.self; # Int type has a .self method, so here $num3 has `42` in it  (my $stuff = '♥'.Int).so; say $stuff.self; # OUTPUT: «(HANDLED) Cannot convert string to number…» # Here, Failure is handled, so .self just returns it as is

In Mu§

See primary documentation in context for method self. 

method self(--> Mu)

Returns the object it is called on.