On Apr 12, Ilmari Karonen said:
>On Tue, 9 Apr 2002 [EMAIL PROTECTED] wrote:
>> On Tue, Apr 09, 2002 at 01:49:01PM +0300, Ilmari Karonen wrote:
>> > On Fri, 5 Apr 2002 [EMAIL PROTECTED] wrote:
>> > >
>> > > sub shuffle {
>> > > for (my $i = @_; $i;) {
>> > > my $j = rand $i --;
>> > > @_ [$i => $j] = @_ [$j => $i]
>> > > }
>> > > @_;
>> > > }
>> >
>> > It doesn't, unfortunately, allow for the idiom one expects from a
>> > copy-and-shuffle function, namely
>> >
>> > my @shuffled = shuffle @original;
>>
>> It allows for:
>>
>> my @shuffled = shuffle 1 .. 10;
>
>Not very consistently, though:
>
> my @shuffled = shuffle 'A',2,3,4,5,6,7,8,9,10,'J','Q','K';
> Modification of a read-only value attempted at - line 4.
Then change
my $i = @_
to
my $i = @_ = @_
in the for loop.
--
Jeff "japhy" Pinyan [EMAIL PROTECTED] http://www.pobox.com/~japhy/
RPI Acacia brother #734 http://www.perlmonks.org/ http://www.cpan.org/
** Look for "Regular Expressions in Perl" published by Manning, in 2002 **
<stu> what does y/// stand for? <tenderpuss> why, yansliterate of course.
[ I'm looking for programming work. If you like my work, let me know. ]
