Monks,

I've been trying to learn a bit more about sorting, but was having problems with 'A brief tutorial on Perl's native sorting facilities' A brief tutorial on Perl's native sorting facilities. by BrowserUk.
The desc and examples looked just fine and I seemed to understand it, but couldn't reproduce it...
After some experimentation and inspiration I discovered the following:

From perldocs:

#!/usr/bin/perl -w
use strict;

use locale;
print +(sort grep /\w/, map { chr } 0..255), "\n";

no locale;
print +(sort grep /\w/, map { chr } 0..255), "\n";
[download]

produced this:
_0123456789aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ 0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ_abcdefghijklmnopqrstuvwxyz

My test prog

#!/usr/bin/perl -w
use strict;

my (
    @arr1
   );

# GRT
# Sort by num, then letter

use locale;
print "locale\n";

@arr1 = map{ unpack 'x[NA1]A*', $_ }
        sort
        map{ pack 'NA1 A*', substr( $_, 1 ), substr( $_, 0, 1 ),  $_ }
        qw[ A473 B437 B659 C659 C123 D123 D222 E222 E001 A001 ];
print join("\n", @arr1)."\n\n";

no locale;
print "no locale\n";
@arr1 = map{ unpack 'x[NA1]A*', $_ }
        sort
        map{ pack 'NA1 A*', substr( $_, 1 ), substr( $_, 0, 1 ),  $_ }
        qw[ A473 B437 B659 C659 C123 D123 D222 E222 E001 A001 ];
print join("\n", @arr1)."\n";
[download]

Outputs:

locale
A001
A473
B437
B659
C123
C659
D123
D222
E001
E222

no locale
A001
E001
C123
D123
D222
E222
B437
A473
B659
C659
[download]

It seems to me that regardless of locale/no locale, it should sort nums before letters, as per BrowserUK's tutorial.
FYI:
perl v5.8.8, Linux openSUSE 10.2 (i586) 2.6.18.2-34-bigsmp

Also: env|grep -i lc has no output, set|grep -i lc gives:

MAILCHECK=60
        MODLIST=($(LC_ALL=C $YAST -l| grep '^[a-z]' | grep -v "Availab
+le"));
            done <<(LC_ALL=C $YAST $mod $prev help 2>&1);
            done <<(LC_ALL=C $YAST $mod help 2>&1);
test_lc ()
    for lc in LANG LC_CTYPE LC_NUMERIC LC_TIME LC_COLLATE LC_MONETARY 
+LC_MESSAGES LC_PAPER LC_NAMELC_ADDRESS LC_TELEPHONE LC_MEASUREMENT LC
+_IDENTIFICATION LC_ALL;
        eval val="\$$lc";
            unset lc val;
    unset lc val;
[download]

Cheers
Chris

20071129 Janitored by Corion: Localized link

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