thanks
On Jan 11, 2008 5:04 PM, Jeff Pang <[EMAIL PROTECTED]> wrote:
> On Jan 11, 2008 2:00 PM, Enjoy_Life <[EMAIL PROTECTED]> wrote:
> > hi, who can tell me which is better of the following codes?
> > why there are different methods to read files?
> > thanks
> >
> > 1. open(INPUT, "< filedata") or die "Couldn't open filedata for
> reading:
> > $!\n";
> > while (<INPUT>) {
> > print if /blue/;
> > }
> > close(INPUT);
> >
> > 2. use IO::File;
> > $input = IO::File->new("< filedata")
> > or die "Couldn't open filedata for reading: $!\n";
> >
> > while (defined($line = $input->getline())) {
> > chomp($line);
> > STDOUT->print($line) if $line =~ /blue/;
> > }
> > $input->close();
> >
>
> Almost the same.
> But using IO::File you get more methods to control the file
> handler,like,to be monitored by select with many other handlers.
>
> From perldoc IO::File:
>
> "IO::File" inherits from "IO::Handle" and "IO::Seekable". It extends
> these classes with methods that are specific to file handles.
>
>
> --
> Jeff Pang - use Perl
> [EMAIL PROTECTED]
>
> --
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> http://learn.perl.org/
>
>
>
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