Rules / Types, classes & roles / exception

X::ControlFlow Reference

Error due to calling a loop control command in an ineligible scope

What it is #

Position in the hierarchy #

Inherits from
Does
Inherited byX::ControlFlow::Return

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 illegal #

method illegal returns Str:D

Returns the name of the control flow command that was called.

method enclosing #

method enclosing returns Str:D

Returns the name of the missing enclosing construct.

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.

1 no-output · 1 rakupp-differs

class X::ControlFlow is Exception { }

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

last;
CATCH { default { put .^name, ': ', .Str } };
# OUTPUT: «X::ControlFlow: last without loop construct␤»
Documentation
X::ControlFlow: last without loop construct
Rakudo
X::ControlFlow: last without loop construct
Raku++

Raku++ disagrees with both the documentation and Rakudo — a defect.