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[ID 20010702.002] perldata documents dubious hash slice

From:
Nicholas Clark
Date:
July 2, 2001 08:24
Subject:
[ID 20010702.002] perldata documents dubious hash slice
Message ID:
E15H5Yz-0005KQ-00@nclark.int.copernicusgbs.com

This is a bug report for perl from nick@talking.bollo.cx,
generated with the help of perlbug 1.33 running under perl v5.7.1.


-----------------------------------------------------------------
[Please enter your report here]

perldata.pod gives this as one of its examples of a hash slice:

    foreach (@hash{keys %hash}) {
	s/^\s+//;	    # trim leading whitespace
	s/\s+$//;	    # trim trailing whitespace
	s/(\w+)/\u\L$1/g;   # "titlecase" words
    }

Surely this isn't a good example, as (I think - what am I missing?)

    foreach (values %hash) {
	...
    }

is a more sane way of writing that particular construction, and I don't feel
that adding another paragraph to the pod reminding users of values is a good
idea.

Nicholas Clark

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags:
    category=docs
    severity=medium
---
Site configuration information for perl v5.7.1:

Configured by nclark at Thu Jun 28 09:57:50 BST 2001.

Summary of my perl5 (revision 5.0 version 7 subversion 17) configuration:
  Platform:
    osname=linux, osvers=2.2.19pre17, archname=i686-linux
    uname='linux nclark 2.2.19pre17 #2 wed may 2 13:59:30 gmt 2001 i686 unknown '
    config_args='-Dusedevel -Dcf_email=nick@talking.bollo.cx -Ubincompat5005 -Uinc_version_list -Uversiononly -Uuselongdouble -Uuse64bitint -de -Dcc=gcc-3.0'
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef use5005threads=undef useithreads=undef usemultiplicity=undef
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
  Compiler:
    cc='gcc-3.0', ccflags ='-Wall -fno-strict-aliasing -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64',
    optimize='-O2',
    cppflags='-Wall -fno-strict-aliasing -I/usr/local/include'
    ccversion='', gccversion='3.0 20010402 (Debian prerelease)', gccosandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t', lseeksize=8
    alignbytes=4, usemymalloc=n, prototype=define
  Linker and Libraries:
    ld='gcc-3.0', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lnsl -lgdbm -ldbm -ldb -ldl -lm -lc -lcrypt -lutil
    perllibs=-lnsl -ldl -lm -lc -lcrypt -lutil
    libc=/lib/libc-2.2.3.so, so=so, useshrplib=false, libperl=libperl.a
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-rdynamic'
    cccdlflags='-fpic', lddlflags='-shared -L/usr/local/lib'

Locally applied patches:
    DEVEL10995

---
@INC for perl v5.7.1:
    /usr/local/lib/perl5/5.7.1/i686-linux
    /usr/local/lib/perl5/5.7.1
    /usr/local/lib/perl5/site_perl/5.7.1/i686-linux
    /usr/local/lib/perl5/site_perl/5.7.1
    /usr/local/lib/perl5/site_perl
    .

---
Environment for perl v5.7.1:
    HOME=/home/nclark
    LANG=C
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/home/nclark/bin:/usr/local/bin:/bin:/usr/bin:/usr/X11/bin:/usr/bin/X11:/usr/contrib/bin:/usr/games:/usr/sbin:/usr/ucb:/sbin:/usr/etc:/data3/src/emacs/bin/i386-unknown-bsdi2.1/
    PERL_BADLANG (unset)
    SHELL=/bin/bash




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