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perl needs logical xor #1211

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p5pRT opened this issue Feb 22, 2000 · 2 comments
Closed

perl needs logical xor #1211

p5pRT opened this issue Feb 22, 2000 · 2 comments
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distro-bsdos documentation

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@p5pRT
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p5pRT commented Feb 22, 2000

Migrated from rt.perl.org#2194 (status was 'resolved')

Searchable as RT2194$
@p5pRT
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p5pRT commented Feb 22, 2000

From chaos@puzzle.palace.net

Created by chaos@crystal.palace.net

'foo' ^ '' gives a true value ('foo', to be precise). Because the
bitwise operators are overloaded with magical behavior for strings,
Perl needs a logical XOR operator, ^^, so cases like this can be made
to work without rigamarole.

Perl Info 


Site configuration information for perl 5.00503:

Configured by chaos at Wed Jun  2 16:54:30 EDT 1999.

Summary of my perl5 (5.0 patchlevel 5 subversion 3) configuration:
  Platform:
    osname=bsdos, osvers=4.0.1, archname=i386-bsdos
    uname='bsdos void.palace.net 4.0.1 bsdi bsdos 4.0.1 kernel #1: wed jun 2 14:00:26 edt 1999 chaos@void.palace.net:usrsrcsyscompilehyperion i386 '
    hint=recommended, useposix=true, d_sigaction=define
    usethreads=undef useperlio=undef d_sfio=undef
  Compiler:
    cc='cc', optimize='-O7', gccversion=2.7.2.1
    cppflags=''
    ccflags =''
    stdchar='char', d_stdstdio=undef, usevfork=false
    intsize=4, longsize=4, ptrsize=4, doublesize=8
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=12
    alignbytes=4, usemymalloc=n, prototype=define
  Linker and Libraries:
    ld='ld', ldflags =''
    libpth=/usr/local/lib /usr/shlib /shlib /usr/lib /usr/X11/lib
    libs=-ldl -lm
    libc=/shlib/libc.so, so=so, useshrplib=true, libperl=libperl.so
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags=' '
    cccdlflags='-fPIC', lddlflags='-shared -x '



@INC for perl 5.00503:
	/usr/local/lib/perl5/5.00503/i386-bsdos
	/usr/local/lib/perl5/5.00503
	/usr/local/lib/perl5/site_perl/5.005/i386-bsdos
	/usr/local/lib/perl5/site_perl/5.005
	.


Environment for perl 5.00503:
    HOME=/root
    LANG (unset)
    LC_CTYPE=ISO8859-1
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)
    PATH=/sbin:/usr/sbin:/bin:/usr/bin:/usr/contrib/bin:/usr/X11/bin:/usr/local/sbin:/usr/local/bin:/var/www/bin
    PERL_BADLANG (unset)
    SHELL=/bin/bash

@p5pRT
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p5pRT commented Feb 23, 2000

From [Unknown Contact. See original ticket]

"Matthew R. Sheahan" <chaos@​puzzle.palace.net> wrote

'foo' ^ '' gives a true value ('foo', to be precise). Because the
bitwise operators are overloaded with magical behavior for strings,
Perl needs a logical XOR operator, ^^, so cases like this can be made
to work without rigamarole.

Perl already has a logical xor operator. See "xor" in perlop.

Mike Guy

@p5pRT p5pRT closed this as completed Nov 28, 2003
@p5pRT p5pRT mentioned this issue Oct 19, 2019
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