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authorPerl 5 Porters <perl5-porters@africa.nicoh.com>1997-02-22 04:41:00 +1200
committerChip Salzenberg <chip@atlantic.net>1997-02-22 04:41:00 +1200
commitaa6893958c2bfb6fa4ab923c8466c188c65748fd (patch)
tree012b1f5dd2622b8c322606df0fa2de1a7ec582b1 /pod/perltie.pod
parentd53f8f1cc3de155a009198bbc7c01e2741aa70ac (diff)
downloadperl-aa6893958c2bfb6fa4ab923c8466c188c65748fd.tar.gz
[inseparable changes from patch from perl5.003_27 to perl5.003_28]
CORE LANGUAGE CHANGES Subject: Don't let C<sub foo;> undefine &foo From: Chip Salzenberg <chip@perl.com> Files: op.c Subject: Make code, doc agree on $ENV{PATH} and `cmd` From: Chip Salzenberg <chip@perl.com> Files: pod/perlsec.pod pp_sys.c Subject: Optimize keys() and values() in void context From: Chip Salzenberg <chip@perl.com> Files: doop.c op.c CORE PORTABILITY Subject: VMS patches post _27 Date: Thu, 20 Feb 1997 01:58:46 -0500 (EST) From: Charles Bailey <bailey@HMIVAX.HUMGEN.UPENN.EDU> Files: MANIFEST dosish.h hv.c lib/ExtUtils/MM_VMS.pm lib/ExtUtils/xsubpp perl.c perlsdio.h pod/perldelta.pod pod/perlvar.pod t/op/closure.t unixish.h vms/Makefile vms/descrip.mms vms/ext/filespec.t vms/genconfig.pl vms/vms.c vms/vmsish.h private-msgid: <01IFMEMPN1IU0057E2@hmivax.humgen.upenn.edu> Subject: Re: OS/2 patch for _27 Date: Thu, 20 Feb 1997 19:24:16 -0500 (EST) From: Ilya Zakharevich <ilya@math.ohio-state.edu> Files: INSTALL README.os2 lib/Test/Harness.pm os2/Changes os2/OS2/PrfDB/t/os2_prfdb.t os2/os2.c os2/os2ish.h os2/perl2cmd.pl perl.c pod/perldelta.pod t/TEST t/harness t/op/magic.t Msg-ID: <199702210024.TAA03174@monk.mps.ohio-state.edu> (applied based on p5p patch as commit 833d3f255ed68b969f062cec63d33f853ed9237c) DOCUMENTATION Subject: INSTALL updates since _26 Date: Tue, 18 Feb 1997 16:00:08 -0500 (EST) From: Andy Dougherty <doughera@fractal.phys.lafayette.edu> Files: INSTALL Msg-ID: <Pine.SOL.3.95q.970218155815.2014F-100000@fractal.lafayette.e (applied based on p5p patch as commit a8247d96fd6167a3b920e63aedee5592cd6e29a7) Subject: Document "$$0" change From: Chip Salzenberg <chip@perl.com> Files: pod/perldelta.pod Subject: Don't recommend impossible //o for C<$x =~ $y> From: Chip Salzenberg <chip@perl.com> Files: pod/perlop.pod Subject: Correct doc that claimed that <FH> was never false From: Chip Salzenberg <chip@perl.com> Files: pod/perldelta.pod pod/perlop.pod Subject: Document C<$?> vs. $SIG{CHLD} From: Ulrich Pfeifer <pfeifer@charly.informatik.uni-dortmund.de> Files: pod/perlvar.pod Subject: Add pumpkin.pod From: Chip Salzenberg <chip@perl.com> Files: MANIFEST Porting/pumpkin.pod Subject: Don't say "associat*ve arr*y" From: Chip Salzenberg <chip@perl.com> Files: MANIFEST gv.h hv.c lib/Env.pm lib/overload.pm opcode.pl pod/perl.pod pod/perldelta.pod pod/perldiag.pod pod/perlfunc.pod pod/perlguts.pod pod/perlmod.pod pod/perltie.pod pod/perltoc.pod pod/perltrap.pod x2p/a2p.pod OTHER CORE CHANGES Subject: Fix a typo From: Chip Salzenberg <chip@perl.com> Files: pp_sys.c Subject: Fix perl_call_sv(..., G_NOARGS) From: Chip Salzenberg <chip@perl.com> Files: perl.c Subject: Fix SIGSEGV when cloning sub with complex expression From: Chip Salzenberg <chip@perl.com> Files: op.c
Diffstat (limited to 'pod/perltie.pod')
-rw-r--r--pod/perltie.pod25
1 files changed, 12 insertions, 13 deletions
diff --git a/pod/perltie.pod b/pod/perltie.pod
index 13135c4ad5..dfc6894172 100644
--- a/pod/perltie.pod
+++ b/pod/perltie.pod
@@ -293,19 +293,18 @@ the following output demonstrates:
=head2 Tying Hashes
-As the first Perl data type to be tied (see dbmopen()), associative arrays
-have the most complete and useful tie() implementation. A class
-implementing a tied associative array should define the following
-methods: TIEHASH is the constructor. FETCH and STORE access the key and
-value pairs. EXISTS reports whether a key is present in the hash, and
-DELETE deletes one. CLEAR empties the hash by deleting all the key and
-value pairs. FIRSTKEY and NEXTKEY implement the keys() and each()
-functions to iterate over all the keys. And DESTROY is called when the
-tied variable is garbage collected.
-
-If this seems like a lot, then feel free to inherit from
-merely the standard Tie::Hash module for most of your methods, redefining only
-the interesting ones. See L<Tie::Hash> for details.
+As the first Perl data type to be tied (see dbmopen()), hashes have the
+most complete and useful tie() implementation. A class implementing a
+tied hash should define the following methods: TIEHASH is the constructor.
+FETCH and STORE access the key and value pairs. EXISTS reports whether a
+key is present in the hash, and DELETE deletes one. CLEAR empties the
+hash by deleting all the key and value pairs. FIRSTKEY and NEXTKEY
+implement the keys() and each() functions to iterate over all the keys.
+And DESTROY is called when the tied variable is garbage collected.
+
+If this seems like a lot, then feel free to inherit from merely the
+standard Tie::Hash module for most of your methods, redefining only the
+interesting ones. See L<Tie::Hash> for details.
Remember that Perl distinguishes between a key not existing in the hash,
and the key existing in the hash but having a corresponding value of