Tielman Koekemoer (TNE) wrote:
Hi all,
Hello,
Why can't I use a subscript in the angle brackets? e.g.
@files=`ls /app2/koekemtn/scripts/dbstats/test`;
chomp $files[0];
open ( $files[0] , "<$files[0]") || die "Cannot open $files[0]\n";
while (<$files[0]>) {
print "$_";
}
perldoc perlop
[snip]
I/O Operators
[snip]
If what the angle brackets contain is a simple scalar variable (e.g.,
<$foo>), then that variable contains the name of the filehandle to
input from, or its typeglob, or a reference to the same. For example:
$fh = \*STDIN;
$line = <$fh>;
If what's within the angle brackets is neither a filehandle nor a
simple scalar variable containing a filehandle name, typeglob, or
typeglob reference, it is interpreted as a filename pattern to be
globbed, and either a list of filenames or the next filename in the
list is returned, depending on context. This distinction is determined
on syntactic grounds alone. That means "<$x>" is always a readline()
from an indirect handle, but "<$hash{key}>" is always a glob(). That's
because $x is a simple scalar variable, but $hash{key} is not--it's a
hash element.
John
--
use Perl;
program
fulfillment
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