diff options
| author | Rafael Garcia-Suarez <rgarciasuarez@gmail.com> | 2009-05-12 13:43:23 +0200 |
|---|---|---|
| committer | Rafael Garcia-Suarez <rgarciasuarez@gmail.com> | 2009-05-12 13:43:23 +0200 |
| commit | 054b75b0acb048c615059d324b6ffff3b9bba2b3 (patch) | |
| tree | 576b796aea1c824bcb71850b51616cc5d6323e3a /pod/perltodo.pod | |
| parent | f118ea0d484695c3af550a63cea6055340ab67d7 (diff) | |
| download | perl-054b75b0acb048c615059d324b6ffff3b9bba2b3.tar.gz | |
Smart matching is to-done.
Diffstat (limited to 'pod/perltodo.pod')
| -rw-r--r-- | pod/perltodo.pod | 49 |
1 files changed, 0 insertions, 49 deletions
diff --git a/pod/perltodo.pod b/pod/perltodo.pod index 0a75e7092b..e4be910086 100644 --- a/pod/perltodo.pod +++ b/pod/perltodo.pod @@ -26,55 +26,6 @@ programming languages offer you 1 line of immortality? =head1 Tasks that only need Perl knowledge -=head2 Smartmatch design issues - -In 5.10.0 the smartmatch operator C<~~> isn't working quite "right". But -before we can fix the implementation, we need to define what "right" is. -The first problem is that Robin Houston implemented the Perl 6 smart match -spec as of February 2006, when smart match was axiomatically symmetrical: -L<http://groups.google.com/group/perl.perl6.language/msg/bf2b486f089ad021> - -Since then the Perl 6 target moved, but the Perl 5 implementation did not. - -So it would be useful for someone to compare the Perl 6 smartmatch table -as of February 2006 L<http://svn.perl.org/viewvc/perl6/doc/trunk/design/syn/S03.pod?view=markup&pathrev=7615> -and the current table L<http://svn.perl.org/viewvc/perl6/doc/trunk/design/syn/S03.pod?revision=14556&view=markup> -and tabulate the differences in Perl 6. The annotated view of changes is -L<http://svn.perl.org/viewvc/perl6/doc/trunk/design/syn/S03.pod?view=annotate> and the diff is -C<svn diff -r7615:14556 http://svn.perl.org/perl6/doc/trunk/design/syn/S03.pod> --- search for C<=head1 Smart matching>. (In theory F<viewvc> can generate that, -but in practice when I tried it hung forever, I assume "thinking") - -With that done and published, someone (else) can then map any changed Perl 6 -semantics back to Perl 5, based on how the existing semantics map to Perl 5: -L<http://search.cpan.org/~rgarcia/perl-5.10.0/pod/perlsyn.pod#Smart_matching_in_detail> - - -There are also some questions that need answering: - -=over 4 - -=item * - -How do you negate one? (documentation issue) -http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2008-01/msg00071.html - -=item * - -Array behaviors -http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2007-12/msg00799.html - -* Should smart matches be symmetrical? (Perl 6 says no) - -* Other differences between Perl 5 and Perl 6 smart match? - -=item * - -Objects and smart match -http://www.xray.mpe.mpg.de/mailing-lists/perl5-porters/2007-12/msg00865.html - -=back - =head2 Remove duplication of test setup. Schwern notes, that there's duplication of code - lots and lots of tests have |