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Fatal will be a built-in pragma in Perl 6, and any code which uses the fail keyword will fail in the way specified by the caller, which might be to throw a fatal exception, or to return an unthrown exception that is behaves like undef, or to cause some form of backtracking, in the case of the pattern matching engine.

I'll talk about system elsewhere.


In reply to Re^3: Perl oddities by TimToady
in thread Perl oddities by brian_d_foy

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    [Corion]: ambrus: Yeah, at least that's what I think I'll start with. A timer and potentially the dummy IO function that never is ready
    [ambrus]: That only lets you invoke the main loop from Prima->run;, not from AnyEvent->condvar- >recv; but that shouldn't matter
    [Corion]: ambrus: Details ;)
    [ambrus]: Like <c>{ package AnyEvent::Impl:: Prima; use Prima; sub io{ my($s,%r)=@_; Prima::File->new( file=>$r{fh},mask =>("w"eq$r{poll}? fe::Write():fe:: Read())|fe:: Exception,onRead =>$r{cb},onWrite =>$r{cb}, onException=>$r{cb }) } sub timer { ... } push @AnyEvent::REGI
    [ambrus]: argh, too long, let me try on scratchpad

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