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Re: need sort help

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From:
Brandon Allbery
Date:
June 9, 2018 04:03
Subject:
Re: need sort help
Message ID:
CAKFCL4WFpZzhCEnGAm4ypW8v=U8ebiGfT=d1F00XDyBOFyXeNg@mail.gmail.com
Brent thinkoed that slightly. (Forgot that first use of a placeholder
"declares" it, and thereafter you don't use the ^. Which then collides with
the local "my" variables.)

> @x.sort: {
>    my $a = $^x ~~ m:g/\d+/;
>    my $b = $^y ~~ m:g/\d+/;
>    $a[6].defined cmp $b[6].defined
>    ??
>      $a[3] cmp $b[3]
>    || $a[1] cmp $b[1]
>    || $a[2] cmp $b[2]
>    || $a[4] cmp $b[4]
>    || $a[5] cmp $b[5]
>    || $a[6] cmp $b[6]
>    || $x cmp $y
>    !! $x cmp $y
> };

On Fri, Jun 8, 2018 at 11:53 PM ToddAndMargo <ToddAndMargo@zoho.com> wrote:

> On 06/08/2018 07:00 PM, Brent Laabs wrote:
> > let me revise that
> >
> > @x.sort: {
> >    my $a = $^a ~~ m:g/\d+/;
> >    my $b = $^b ~~ m:g/\d+/;
> >    $a[6].defined cmp $b[6].defined
> >    ??
> >      $a[3] cmp $b[3]
> >    || $a[1] cmp $b[1]
> >    || $a[2] cmp $b[2]
> >    || $a[4] cmp $b[4]
> >    || $a[5] cmp $b[5]
> >    || $a[6] cmp $b[6]
> >    || $^a cmp $^b
> >    !! $^a cmp $^b
> > };
> >
>
>
> $   ls | perl6 -e 'my @x=slurp(); @x.sort: { my $a = $^a ~~ m:g/\d+/;my
> $b = $^b ~~ m:g/\d+/;$a[6].defined cmp $b[6].defined ?? $a[3] cmp $b[3]
> || $a[1] cmp $b[1] || $a[2] cmp $b[2] || $a[4] cmp $b[4]  || $a[5] cmp
> $b[5]  || $a[6] cmp $b[6] || $^a cmp $^b !! $^a cmp $^b a cmp $^b' $^a
> cmp $^b
> ===SORRY!=== Error while compiling -e
> Redeclaration of symbol '$^a' as a placeholder parameter
> at -e:1
> ------> my @x=slurp(); @x.sort: { my $a = $^a⏏ ~~ m:g/\d+/; my $b = $^b
> ~~ m:g/\d+/;$a
>


-- 
brandon s allbery kf8nh                               sine nomine associates
allbery.b@gmail.com                                  ballbery@sinenomine.net
unix, openafs, kerberos, infrastructure, xmonad        http://sinenomine.net

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