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•Re: Catching errors in closing lexical filehandles

by merlyn (Sage)
on Sep 27, 2004 at 11:57 UTC ( #394129=note: print w/replies, xml ) Need Help??


in reply to Catching errors in closing lexical filehandles

It's actually rather simple.
sub IO::Handle::DESTROY { my $deadbody = shift; not defined fileno $deadbody or close $deadbody or die "Cannot close $deadbody: $!"; }
Of course, this is a global change, but that's life. You can make it regional by putting it inside a local setting:
{ local *IO::Handle::DESTROY = sub { ... }; { open my $fh, "..."; ... } # will trigger here }
The nested parens here ensure that the handle is destroyed before the local sub assignment goes out of scope.

-- Randal L. Schwartz, Perl hacker
Be sure to read my standard disclaimer if this is a reply.

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Re^2: Catching errors in closing lexical filehandles
by gaal (Parson) on Sep 27, 2004 at 12:14 UTC
    Interesting: when I print ref $fh, I get GLOB, not IO::Handle. Is there some special magic at work here?

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