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Re^3: How to restore from redirecting STDOUT to variable?

by mbethke (Hermit)
on Jan 17, 2013 at 04:30 UTC ( #1013706=note: print w/replies, xml ) Need Help??


in reply to Re^2: How to restore from redirecting STDOUT to variable?
in thread How to restore from redirecting STDOUT to variable?

That you want the file descriptor dup()ed, i.e. get a new file descriptor that refers to the same output stream as STDERR and a Perl-level file handle layered on top of that.

As the open() perldoc also explains, this is even better written with an '=' after the ampersand:

open my $save_out, '>&=', \*STDOUT or die "Can't fdopen STDOUT: $!"; open STDOUT, '>&=', $save_out or die "Can't restore STDOUT: $!";
This avoids creating an all new file descriptor but reuses the system's for a new Perl file handle.

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Re^4: How to restore from redirecting STDOUT to variable?
by anaconda_wly (Scribe) on Jan 17, 2013 at 06:01 UTC
    Great! Thank all!

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[ambrus]: One more obvious possible workaround is to just have the GUI of your program freeze for as long as the HTTP is running;
[Corion]: brb
[ambrus]: or, if Prima supports this, embedding its event loop to an outer main event loop, and running AnyEvent::HTTP in that outer one.
[ambrus]: Corion: I think there's already some form of AnyEvent integration for Prima, according to https://metacpan. org/source/ KARASIK/Prima-1. 49/examples/ socket_anyevent.pl
[ambrus]: Corion: even better, https://metacpan. org/pod/distributi on/Prima/pod/ Prima/faq.pod#How- do-I-use-Prima- with-AnyEvent
[ambrus]: a FAQ question
[ambrus]: ah, apparently that's the POE thing you were talking about
[ambrus]: Ok, but if there's a POE integration, then I again suggest that you consider using IO::Async::Loop:: Poe . I don't know if that will work.

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