Hi Stace! On Sunday 28 Feb 2010 20:14:57 S O wrote: > sorry guys i apologize for this question, > > how come when writing a program that these are not equivalent: > > @files = readdir(D); > > vs > > readdir(D) = @files; >
Well, first of all, use strict and warnings and use lexical filehandles and dirhandles. Otherwise the "A = B" sets A to the value of the expression B (and never vice- versa). "my @files = readdir($dir_handle);" assigns what readdir returns (in list context) to @files, and populates @files with the contents of the directory. But setting «readdir($dir_handle)» with some value is not permitted by Perl and I'm not sure what it will do. For more information, see the section about lvalues and rvalues here: http://en.wikipedia.org/wiki/Value_%28computer_science%29 Regards, Shlomi Fish > > thanks for your patience, > stace -- ----------------------------------------------------------------- Shlomi Fish http://www.shlomifish.org/ Stop Using MSIE - http://www.shlomifish.org/no-ie/ Deletionists delete Wikipedia articles that they consider lame. Chuck Norris deletes deletionists whom he considers lame. Please reply to list if it's a mailing list post - http://shlom.in/reply . -- To unsubscribe, e-mail: beginners-unsubscr...@perl.org For additional commands, e-mail: beginners-h...@perl.org http://learn.perl.org/
