perl6/doc/lib/X/Parameter/Placeholder
doc src
(title) class X::Parameter::Placeholder
class X::Parameter::Placeholder does X::Comp
Thrown when a placeholder parameter is used inside a signature where
a normal parameter is expected. The reason is often that a named parameter
:$param was misspelled as $:param .
For example
sub f($:param) { }
produces
===SORRY!===
In signature parameter, placeholder variables like $:param are illegal
you probably meant a named parameter: ':$param'
Methods
(head2) parameter
The text of the offensive parameter declaration ( $:param in the example
above).
(head2) right
Suggestion on how to write the parameter declaration instead ( :$param in
the example above).
