June 2002
Beginner
759 pages
80h 42m
English
openhandle
openhandle fh
Returns fh if
fh is an open filehandle.
fh may also be a tied filehandle.
Returns undef on
failure.
my $fh = openhandle(*STDIN);
$fh = openhandle("sumfin"); # undef, since sumfin isn't
# open