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Postings from February 2009
On Sun Feb 15 2009 @ 9:45, Octavian Râsnita wrote:
> From: "John W. Krahn" <jwkrahn@shaw.ca>
>> Kevin wrote:
>>> Could someone please direct me to some web pages where I can go
>>> through all deprecated perl functions and/or ways of writing perl
>>> script? It is not easy for me to figure out whether an on-line
>>> example is deprecated or not. I once saw:
>>>
>>> @files = <$path_to_directory>
>>>
>>> on the web and found it worked perfectly, then kept using this way of
>>> writing my perl script. But I was told yesterday such a script is
>>> deprecated now.
>>
>> AFAIK that is not deprecated.
>
> Can you explain how it works?
>
> I have tried the script below, and of course it doesn't print anything:
>
> use strict;
>
> my $path_to_directory = '/';
>
> my @files = <$path_to_directory>;
>
> foreach my $file(@files) {
> print "$file\n";
> }
>
> Thanks.
>
> Octavian
Yup, I'm confused as well. At first, I thought it was the alternative way
to write glob( $path_to_directory ), but not exactly.
According to perldoc perlop, @files = <$path_to_directory > (note the extra
space) will work as a glob, but otherwise, the interpreter thinks that you
are trying to run readline on an unopened filehandle. Running a short test
script with 'diagnostics' enabled, I get this:
readline() on unopened filehandle $path at files line 7 (#1)
(W unopened) An I/O operation was attempted on a filehandle that was
never initialized. You need to do an open(), a sysopen(), or a socket()
call, or call a constructor from the FileHandle package.
(Are you trying to call readline() on dirhandle $path?)
So, I would also be curious to know what that construction is supposed to do.
Thanks, T
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