>>>>> "Gunnar" == Gunnar Hjalmarsson <nore...@gunnar.cc> writes:
Gunnar> Martin Spinassi wrote:
>> Is there any way to open a file for input and output at the same time?
Gunnar> Yes. Open it with the '+<' MODE.
Gunnar> open my $fh, '+<', $file or die "Couldn't open $file: $!";
Gunnar> my @keep;
Gunnar> while ( <$fh> ) {
Gunnar> next if /^--/;
Gunnar> push @keep, $_;
Gunnar> }
Gunnar> seek $fh, 0, 0;
Gunnar> truncate $fh, 0;
And then your power fails at this moment, and you've lost the entire file.
Much safer to use in-place editing. See $^I in perlvar.
--
Randal L. Schwartz - Stonehenge Consulting Services, Inc. - +1 503 777 0095
<mer...@stonehenge.com> <URL:http://www.stonehenge.com/merlyn/>
Smalltalk/Perl/Unix consulting, Technical writing, Comedy, etc. etc.
See http://methodsandmessages.vox.com/ for Smalltalk and Seaside discussion
--
To unsubscribe, e-mail: beginners-unsubscr...@perl.org
For additional commands, e-mail: beginners-h...@perl.org
http://learn.perl.org/
