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.\" ========================================================================
.\"
.IX Title "Event::Distributor::_Event 3pm"
.TH Event::Distributor::_Event 3pm "2019-08-12" "perl v5.28.1" "User Contributed Perl Documentation"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.if n .ad l
.nh
.SH "NAME"
"Event::Distributor::_Event" \- base class for Event::Distributor events
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
This class is the base from which the following actual classes are derived:
.IP "\(bu" 2
Event::Distributor::Signal
.IP "\(bu" 2
Event::Distributor::Query
.PP
Instances of this class shouldn't be directly created by end-user code, but it
is documented here in order to list the shared methods available on all the
subclasses.
.SH "METHODS"
.IX Header "METHODS"
.SS "subscribe"
.IX Subsection "subscribe"
.Vb 1
\&   $event\->subscribe( $code )
.Ve
.PP
Adds a new \f(CW\*(C`CODE\*(C'\fR reference that subscribes to the event. This code is
expected to return a Future instance.
.SS "subscribers"
.IX Subsection "subscribers"
.Vb 1
\&   @codes = $event\->subscribers
.Ve
.PP
Returns a list of \f(CW\*(C`CODE\*(C'\fR references previously subscribed.
.SH "EXPECTED METHODS"
.IX Header "EXPECTED METHODS"
Subclasses are expected to implement the following methods:
.SS "fire"
.IX Subsection "fire"
.Vb 1
\&   $f = $event\->fire( @args )
.Ve
.PP
Invoked by Event::Distributor to actually run the signal. This is expected
to invoke any or all subscribers in whatever manner it implements, passing
arguments as required, and collecting results in some way to provide as the
eventual answer of the Future it returns.
.SH "AUTHOR"
.IX Header "AUTHOR"
Paul Evans <leonerd@leonerd.org.uk>