Jeff Peng wrote: > Because the latter (grep) is essentially a loop,so grep() is not better > than using 'while(<>)'.Specially,when the file's size is large,reading > all the contents of this file into an array would consume your memory > quickly. >
Another way to speed things up is to pre-filter the file: grep 'a_simple_pattern' data_file | my_script The *NIX grep(1) is normally much faster than Perl's grep. -- __END__ Just my 0.00000002 million dollars worth, --- Shawn "For the things we have to learn before we can do them, we learn by doing them." Aristotle * Perl tutorials at http://perlmonks.org/?node=Tutorials * A searchable perldoc is at http://perldoc.perl.org/ -- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] <http://learn.perl.org/> <http://learn.perl.org/first-response>
