Ah, yeah that'll work. I can just set a count and
die "blah" if $count == 0;

Didn't think I could do that with a diamond.
Thanks

On Fri, Feb 8, 2013 at 2:06 AM, Jim Gibson <jimsgib...@gmail.com> wrote:
>
> On Feb 7, 2013, at 10:34 PM, shawn wilson wrote:
>
>> How do I take in a file or pipe input? What I want is:
>> script.pl file.txt
>> or
>> cat file.txt | script.pl
>>
>> What I'm trying is:
>> my $logfile;
>> if (@ARGV and $ARGV[0] =~ /^-./) {
>>  open($logfile, '<', $ARGV[0]);
>> } elsif (-t STDIN and not @ARGV) {
>>  $logfile = <STDIN>;
>> } else {
>>  doe "no data"
>> }
>>
>> PS - I want to avoid slurping the whole file.
>
> The null filehandle (<>) will read from standard input if @ARGV is empty, and 
> from the members of @ARGV, interpreting each scalar as a file name to be 
> opened automatically in succession.
>
> Does that do what you want?
>
>
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