On Thu, 28 Mar 2002, Bob Showalter wrote:
> > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> > Thanks, Bob! After reading the IO::Handle man page, I decided
> > to distill this approach a bit further:
> >
> > print F if fileno(F);
>
> Of course, that's even simpler! Just to be nitpicky,
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, March 27, 2002 6:16 PM
> To: Beginners Perl Mailing List
> Subject: RE: Testing for filehandles
>
>
> On Wed, 27 Mar 2002, Bob Showalter wrote:
> > You can pass a
On Wed, 27 Mar 2002, Bob Showalter wrote:
> You can pass a filehandle glob to IO::Handle::opened():
Thanks, Bob! After reading the IO::Handle man page, I decided to distill
this approach a bit further:
print F if fileno(F);
--
Eric P.
Los Gatos, CA
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On Wed, 27 Mar 2002, Agustin Rivera wrote:
> Ok, I've tried it both ways and it returns 1 (true) as the value. What am I
> doing wrong?
Agustin:
1. What *exactly* do you mean "both" ways?
2. References...
>From the Getopt::Std man page:
getopt('oDI'); # -o, -D & -I take arg. Sets o
Message -
From: "Chas Owens" <[EMAIL PROTECTED]>
To: "Agustin Rivera" <[EMAIL PROTECTED]>
Cc: "Beginners Perl Mailing List" <[EMAIL PROTECTED]>
Sent: Wednesday, March 27, 2002 1:51 PM
Subject: Re: Testing for filehandles
> Getopt::Std creates t
> -Original Message-
> From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
> Sent: Wednesday, March 27, 2002 3:18 PM
> To: Beginners Perl Mailing List
> Subject: Testing for filehandles
>
>
> Hello, All:
>
> I've looked around for an answer to this (The Camel Book, The
> Ram Book,
> pe
On 27 Mar 2002, Chas Owens wrote:
> Getopt::Std creates the $opt_n variables. To use it with use strict; in
> place you must use the use vars ($opt_n); pragma as well. or just use
> the getopts('n', \%opts); call. Then you can say $opts{n}.
Agustin:
Also from the Getopt::Std man page:
TED]>
> To: <[EMAIL PROTECTED]>; "Beginners Perl Mailing List"
> <[EMAIL PROTECTED]>
> Sent: Wednesday, March 27, 2002 1:32 PM
> Subject: RE: Testing for filehandles
>
>
> >
> > You'd probably have better luck testing for the open()
On Wed, 27 Mar 2002, Agustin Rivera wrote:
> How would that work with use strict;? I tried it once and when I declared my
> $opt_n before using getopts, it wouldn't work.
Agustin:
>From the Getopt::Std man page:
Note that, if your code is running under the recommended
`use strict
ch 27, 2002 1:46 PM
To: Timothy Johnson; Beginners Perl Mailing List
Subject: Re: Testing for filehandles
How would that work with use strict;? I tried it once and when I declared my
$opt_n before using getopts, it wouldn't work.
Agustin Rivera
Webmaster, Pollstar.com
http://www.po
To: <[EMAIL PROTECTED]>; "Beginners Perl Mailing List"
<[EMAIL PROTECTED]>
Sent: Wednesday, March 27, 2002 1:32 PM
Subject: RE: Testing for filehandles
>
> You'd probably have better luck testing for the open() command's success
>
> use Getopts::Std;
> getopts(
Tim:
I know, I know: I excluded the "or die" portion for
readability/simplicity.
On Wed, 27 Mar 2002, Timothy Johnson wrote:
> You'd probably have better luck testing for the open() command's success
I wrote:
>> use Getopts::Std;
>> getopts("n");
>> open(OPT_LOG,">/tmp/foo.txt") if ($opt_n);
>
On Wed, 2002-03-27 at 15:18, [EMAIL PROTECTED] wrote:
> Hello, All:
>
> I've looked around for an answer to this (The Camel Book, The Ram Book,
> perldoc, google.com, etc.) but can't find a thing: Is it possible to test
> for the existence of a filehandle?
>
> I've got a small script that ope
You'd probably have better luck testing for the open() command's success
use Getopts::Std;
getopts("n");
if($opt_n){
open(OPT_LOG,">/tmp/foo.txt") || die "Could not open foo.txt!\n";
}
-Original Message-
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]
Sent: Wednesday, March 27, 20
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