ou want to sort by, you should
do a lexical sort (using cmp), not a numerical sort (using <=>).
Finally you can print whichever fields you like.
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Gunnar Hjalmarsson
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hello perl ,
I am trying to sort a data file on field 3 that looks like:
08/09/0411:02:43E4
08/09/0411:02:43E01220
08/09/0411:02:43E00820
08/09/0411:02:43E01001
08/09/0411:02:43E00712
08/09/04
rint "Unsorted nos => @a\n";
print '*'x 30,"\n";
my @b = sort spaceship3 @a;
sub spaceship3 {
$count3++;
print "$count3 \$a = $a whilst \$b = $b , value \= ", $a<=>$b ;
print " Stay\n" if (($a<=>$b) == 1 || ($a&
st $b = 44
$a = 34 whilst $b = 35
$a = 2 whilst $b = 12
$a = 0 whilst $b = 12
$a = 0 whilst $b = 2
0,2,12,14,34,35,44
- Original Message -
From: "Jonathan E. Paton" <[EMAIL PROTECTED]>
To: <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Sunday, November 11, 200
> @a= qw (68 3 5 67 54 23 69 );
>
> @b = sort {-1} @a; ### what happens here !
> results = 5,3,68,67,69,23,54
>
Hey look, its reversed the order of the numbers either side
of the number 67! Extremely useful :P You shouldn't use
this sort, since it breaks for other quantities of numbers.
> @c
@a= qw (68 3 5 67 54 23 69 );
@b = sort {-1} @a; ### what happens here !
results = 5,3,68,67,69,23,54
@c = sort {$a<=>$b} @a; ### what happens here !
results = 3,5,23,54,67,68,69
I know that sort by default sort in ascii order, I wanted to know what
exactly happens to the "spaceship" operator.
