diff options
author | Perl 5 Porters <perl5-porters@africa.nicoh.com> | 1997-01-01 08:59:00 +1200 |
---|---|---|
committer | Chip Salzenberg <chip@atlantic.net> | 1997-01-01 08:59:00 +1200 |
commit | a60067777be62ee91d1318f9ae26d9ed713245de (patch) | |
tree | 9e312a824c6ef40aa10dd0e60451fd737098a965 /pod/perltoot.pod | |
parent | a034a98d8bfd0fd904012bd5227ce209aaaa0b26 (diff) | |
download | perl-a60067777be62ee91d1318f9ae26d9ed713245de.tar.gz |
[inseparable changes from patch from perl5.003_17 to perl5.003_18]
CORE LANGUAGE CHANGES
Subject: Inherited overloading
Date: Sun, 29 Dec 1996 08:12:54 -0500 (EST)
From: Ilya Zakharevich <ilya@math.ohio-state.edu>
Files: gv.c lib/overload.pm perl.h sv.c sv.h t/op/overload.t
Chip Salzenberg writes:
>
> Patch now, tarchive later:
Below is the fixed overloading patch.
Note that in between AMG_names got const on it (a good thing!), but as
a corollary I needed to cast away const-ness to actually use it
(since, say, newSVpv does not have const args).
Enjoy,
p5p-msgid: <199612291312.IAA02134@monk.mps.ohio-state.edu>
Subject: Closures at file scope must be anonymous
From: Chip Salzenberg <chip@atlantic.net>
Files: op.c
Subject: Warn on '{if,while} ($x = X)' where X is glob, readdir, or <FH>
From: Chip Salzenberg <chip@atlantic.net>
Files: op.c pod/perldiag.pod
DOCUMENTATION
Subject: Re: perldiag.pod entry for "Scalar value @%s{%s} ..."
Date: Tue, 31 Dec 1996 11:50:19 -0500
From: Roderick Schertler <roderick@gate.net>
Files: pod/perldiag.pod
Msg-ID: <2043.852051019@eeyore.ibcinc.com>
(applied based on p5p patch as commit c885792efecf3f527b3b5099727cc16b03eee1dc)
OTHER CORE CHANGES
Subject: Get rid of 'Leaked scalars'
From: Chip Salzenberg <chip@atlantic.net>
Files: cop.h gv.c op.c
TESTS
Subject: Expanded locale.t and misc.t
From: Jarkko Hietaniemi <jhi@cc.hut.fi>
Files: t/lib/locale.t t/lib/misc.t
Subject: Expanded my.t
From: Chip Salzenberg <chip@atlantic.net>
Files: t/lib/my.t
Diffstat (limited to 'pod/perltoot.pod')
-rw-r--r-- | pod/perltoot.pod | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/pod/perltoot.pod b/pod/perltoot.pod index ff8e24fb3e..aae3b7393d 100644 --- a/pod/perltoot.pod +++ b/pod/perltoot.pod @@ -448,7 +448,7 @@ of magicalness to a C programmer. It's really just a mnemonic device to remind ourselves that this field is special and not to be used as a public data member in the same way that NAME, AGE, and PEERS are. (Because we've been developing this code under the strict pragma, prior -to 5.004 we'll have to quote the field name.) +to perl version 5.004 we'll have to quote the field name.) sub new { my $proto = shift; @@ -1087,10 +1087,10 @@ base class? That way you could give every object common methods without having to go and add it to each and every @ISA. Well, it turns out that you can. You don't see it, but Perl tacitly and irrevocably assumes that there's an extra element at the end of @ISA: the class UNIVERSAL. -In 5.003, there were no predefined methods there, but you could put +In version 5.003, there were no predefined methods there, but you could put whatever you felt like into it. -However, as of 5.004 (or some subversive releases, like 5.003_08), +However, as of version 5.004 (or some subversive releases, like 5.003_08), UNIVERSAL has some methods in it already. These are built-in to your Perl binary, so they don't take any extra time to load. Predefined methods include isa(), can(), and VERSION(). isa() tells you whether an object or @@ -1196,7 +1196,7 @@ replace the variables above like $AGE with literal numbers, like 1. A bigger difference between the two approaches can be found in memory use. A hash representation takes up more memory than an array representation because you have to allocation memory for the keys as well as the values. -However, it really isn't that bad, especially since as of 5.004, +However, it really isn't that bad, especially since as of version 5.004, memory is only allocated once for a given hash key, no matter how many hashes have that key. It's expected that sometime in the future, even these differences will fade into obscurity as more efficient underlying |