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Re: Use of uninitialized value in string comparison (cmp)

by Discipulus (Canon)
on Sep 16, 2015 at 10:49 UTC ( [id://1142185]=note: print w/replies, xml ) Need Help??


in reply to Use of uninitialized value in string comparison (cmp)

Hello,

sort needs to operate on $a and $b not on $_ 
#sorry win quote
perl -wle "@r=({k=>'r'},{k=>'s'},{k=>'t'});print $_->{k} for sort { $a
+->{k} cmp $b->{k} } @r;"
r
s
t

[download]

L*
There are no rules, there are no thumbs..
Reinvent the wheel, then learn The Wheel; may be one day you reinvent one of THE WHEELS.

Replies are listed 'Best First'.
Re^2: Use of uninitialized value in string comparison (cmp)
by Random_Walk (Prior) on Sep 16, 2015 at 10:57 UTC

    Aaarrgghhh, I knew I had been staring at it too long. I knew that, but it slipped out my memcache somewhere :(. Thanks for the reminder.

    Cheers,
    R.

    Pereant, qui ante nos nostra dixerunt!
[reply]

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