Rules / Types, classes & roles / exception

X::Attribute::Package Reference

Compilation error due to declaring an attribute in an ineligible package

What it is #

Routines #

Signatures are reproduced from the documentation, including their declared return types. A routine listed here is part of the type's published interface; whether Raku++ implements it is a separate question, answered by the examples below.

method name #

method name(--> Str:D)

Returns Str:D.

Returns the name of the attribute that triggered this error.

method package-kind #

method package-kind(--> Str:D)

Returns Str:D.

Returns the kind of package (package, module) that doesn't support attributes.

Examples, run three ways #

Every example below comes from the official documentation, together with the output that documentation asserts. Each was then executed by Rakudo and by Raku++ when this page was built. Where the three agree, one result is shown; where they do not, all three are — because which of them is wrong is exactly the information worth having.

3 no-output

class X::Attribute::Package does X::Comp { }

Not executed: the documentation states no expected output for this example.

module A { has $.x }

Not executed: the documentation states no expected output for this example.

A module cannot have attributes, but you tried to declare '$.x'

Not executed: the documentation states no expected output for this example.