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Manual Reference Pages  -  DEVEL::EVENTS::FILTER::WARN (3)

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NAME

Devel::Events::Filter::Warn - log every event to STDERR

CONTENTS

SYNOPSIS



        # can be used as a handler
        my $h = Devel::Events::Filter::Warn->new();

        # or as a filter in a handler chain

        my $f = Devel::Events::Filter::Warn->new(
                handler => $sub_handler,
        );



DESCRIPTION

This is a very simple debugging aid to see that your filter/handler chains are set up correctly.

A useful helper function you can define is something along the lines of:



        sub _warn_events ($) {
                my $handler = shift;
                Devel::Events::Filter::Warn->new( handler => $handler );
        }



and then prefix handlers which seem to not be getting their events with _warn_events in the source code.

METHODS

filter_event @event calls warn "@event". and returns the event unfiltered.
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perl v5.20.3 DEVEL::EVENTS::FILTER::WARN (3) 2009-01-10

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