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role X::Proc::Async is Exception { ... }


All exceptions thrown by L<C<Proc::Async>|/type/Proc::Async> do this common role.


head

method proc(X::Proc::Async:D --> Proc::Async)


Returns the object that threw the exception.


root

Common role for compile-time errors


role X::Comp


IO related error


role X::IO


Error reported by the operating system


role X::OS


Pod related error


role X::Pod


Syntax error thrown by the compiler


role X::Syntax


Error related to DateTime or Date


role X::Temporal


Exception thrown by Proc::Async


para

L<Examples| file:../examples/index.podlite>


L<Download |file:../download/index.podlite>


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role X::Proc::Async


Error due to calling start on an already started Proc::Async object


class X::Proc::Async::AlreadyStarted is Exception {}


When you call C<start> twice on the same L<C<Proc::Async>|/type/Proc::Async>
object, the second invocation will die with an
C<X::Proc::Async::AlreadyStarted> exception.


my $proc = Proc::Async.new("echo");
$proc.start;
$proc.start;
CATCH { default { put .^name, ': ', .Str } };
# OUTPUT: «X::Proc::Async::AlreadyStarted: Process has already been started␤»


Snapshot of the dynamic call stack


class Backtrace


Single frame of a Backtrace


class Backtrace::Frame


Done control exception


role CX::Done


Emit control exception


role CX::Emit


Last control exception


role CX::Last


Next control exception


role CX::Next


Proceed control exception


role CX::Proceed


Redo control exception


role CX::Redo


Return control exception


role CX::Return


Succeed control exception


role CX::Succeed


Take control exception


role CX::Take


Control exception warning


role CX::Warn


Anomalous event capable of interrupting normal control-flow


class Exception


Delayed exception


class Failure


Error with a custom message


class X::AdHoc


Compilation error due to augmenting an anonymous package


class X::Anon::Augment


Compilation error due to declaring an anonymous multi


class X::Anon::Multi


Exception thrown when trying to assign to something read-only


class X::Assignment::RO


Compilation error due to declaring an attribute outside of a package


class X::Attribute::NoPackage


Compilation error due to declaring an attribute in an ineligible package


class X::Attribute::Package


Compilation error due to not declaring an attribute with the is required trait


class X::Attribute::Required


Compilation error due to an undeclared attribute


class X::Attribute::Undeclared


Compilation error due to augmenting a non-existing type


class X::Augment::NoSuchType


Error due to binding to something that is not a variable or container


class X::Bind


Compilation error due to binding to a natively typed variable


class X::Bind::NativeType


Error due to binding to a slice


class X::Bind::Slice


Error while trying to access a non dynamic variable through CALLER


class X::Caller::NotDynamic


Error due to inappropriate usage of an empty collection


class X::Cannot::Empty


Error due to inappropriate usage of a lazy list


class X::Cannot::Lazy


Error due to calling receive on a closed channel


class X::Channel::ReceiveOnClosed


Error due to calling send on a closed channel


class X::Channel::SendOnClosed


Compilation error due to composing an ineligible type


class X::Composition::NotComposable


Error due to passing positional arguments to a default constructor


class X::Constructor::Positional


Role for control exceptions


role X::Control


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


class X::ControlFlow


Error due to calling return outside a routine


class X::ControlFlow::Return


Error due to using both time zone offset and :timezone


class X::DateTime::TimezoneClash


Compilation error due to a declaration with an ineligible scope


class X::Declaration::Scope


Compilation error due to declaring a multi with an ineligible scope


class X::Declaration::Scope::Multi


Error due to mixing into a type object


class X::Does::TypeObject


Runtime error thrown when a dynamic variable does not exist


class X::Dynamic::NotFound


Error due to specifying an unknown language for EVAL


class X::Eval::NoSuchLang


Compilation error due to exporting the same symbol twice


class X::Export::NameClash


Error due to inheriting from a type that's not composed yet


class X::Inheritance::NotComposed


Compilation error due to inheriting from an ineligible type


class X::Inheritance::Unsupported


Error while invoking methods on a handle in binary mode.


class X::IO::BinaryMode


Error while trying to change the working directory


class X::IO::Chdir


Error while trying to change file permissions


class X::IO::Chmod


Error while trying to change file ownership


class X::IO::Chown


Error while trying to copy a file


class X::IO::Copy


Error while trying to determine the current working directory


class X::IO::Cwd


Error while trying to get a directory's contents


class X::IO::Dir


Error while doing file tests on a non existing path


class X::IO::DoesNotExist


Error while trying to create a link


class X::IO::Link


Error while trying to create a directory


class X::IO::Mkdir


Error while trying to move a file


class X::IO::Move


Error while trying to rename a file or directory


class X::IO::Rename


Error while trying to remove a directory


class X::IO::Rmdir


Error while trying to create a symbolic link


class X::IO::Symlink


Error while trying to remove a file


class X::IO::Unlink


Error due to calling a qualified method from an ineligible class


class X::Method::InvalidQualifier


Error due to calling a method that isn't there


class X::Method::NotFound


Compilation error due to calling a private method without permission


class X::Method::Private::Permission


Compilation error due to an unqualified private method call


class X::Method::Private::Unqualified


Error due to using an ineligible type as a mixin


class X::Mixin::NotComposable


Error due to calling a dispatch command in an ineligible scope


class X::NoDispatcher


Error while trying to coerce a number to another type


class X::Numeric::CannotConvert


Error while trying to divide by zero


class X::Numeric::DivideByZero


Error while trying to coerce a number to a Real type


class X::Numeric::Real


Error due to use of an unimplemented feature


class X::NYI


Compilation error due to use of obsolete syntax


class X::Obsolete


Error due to indexing outside of an allowed range


class X::OutOfRange


Compilation error due to a stubbed package that is never defined


class X::Package::Stubbed


Compilation error due to an unallowed default value in a signature


class X::Parameter::Default


Compilation error due to a parameter with multiple type constraints


class X::Parameter::MultipleTypeConstraints


Compilation error due to an unallowed placeholder in a signature


class X::Parameter::Placeholder


Compilation error due to an unallowed twigil in a signature


class X::Parameter::Twigil


Compilation error due to passing parameters in the wrong order


class X::Parameter::WrongOrder


Compilation error due to multiple phasers of the same type


class X::Phaser::Multiple


Error due to a false return value of a PRE/POST phaser


class X::Phaser::PrePost


Compilation error due to a placeholder in an ineligible block


class X::Placeholder::Block


Compilation error due to a placeholder in the mainline


class X::Placeholder::Mainline


Error due to trying to bind a handle that is also used


class X::Proc::Async::BindOrUse


Error due to tapping the same Proc::Async stream for both text and binary reading


class X::Proc::Async::CharsOrBytes


class X::Proc::Async::AlreadyStarted


The Raku Knowledge Base


role X::Proc::Async

Methods

method proc

See Also