Re^3: Doubt on defined-ness

Interesting idea... but I can't even get that to return an empty string:

#!/usr/bin/perl
use Fcntl;

fcntl(STDIN, F_GETFL, my $flags) or die "Couldn't get flags: $!\n";
fcntl(STDIN, F_SETFL, $flags|O_NONBLOCK) or die "Couldn't set flags: $
+!\n";

$_=<STDIN>;

use Data::Dumper;
print Dumper $_;      # --> prints $VAR1 = undef;
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Maybe you can construct a better case (?)

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Re^4: Doubt on defined-ness by ikegami (Patriarch) on Jun 18, 2008 at 23:42 UTC
I said "maybe", as in "it's something to try". I have no experience with non-blocking handles. Reportedly, `IO::Handle::blocking` doesn't even work on my OS. That said, I do have access to a linux machine, and I'm getting the same result (undef) using `STDIN->blocking(0)`.	[reply] [d/l] [select]
Re^5: Doubt on defined-ness by almut (Canon) on Jun 18, 2008 at 23:51 UTC
Anyhow... Good to have learned IO::Handle provides a `blocking` method :)	[reply] [d/l]