in reply to Re^2: index of the minimum element of the array
in thread index of the minimum element of the array

Also take a look at List::Util for some basic examples. 

use List::Util 'reduce';
sub minindex { reduce { $_[$a] < $_[$b] ? $a : $b } 0 .. $#_ }

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Update: Less succinct now when fixed: 

use List::Util 'reduce';
sub minindex { my @x=@_; reduce { $x[$a] < $x[$b] ? $a : $b } 0..$#_ }

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Re^4: index of the minimum element of the array
by ikegami (Patriarch) on Jan 17, 2014 at 18:23 UTC
    You're accessing the callback's @_ when you mean to access minindex's
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      I'm passing a block to reduce.

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        Impossible. There's no such data type. You are passing a sub reference to reduce. 
        reduce BLOCK LIST

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        is compiled as 
        &reduce(sub BLOCK, LIST)

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        Ikegami is right, thats not working!

        Better pass the list as a closed over array (here @x)

          DB<109> @a=  map { int rand 100 } 1..10
 => (96, 10, 99, 9, 43, 8, 20, 85, 42, 26)

  DB<110> sub minindex { 
             my @x=@_; 
             reduce { $x[$a] < $x[$b] ? $a : $b } 0 .. $#_ 
          }

  DB<111> print minindex @a
5

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        update

        or even better like ikegami now suggested as ref to avoid overhead

          DB<114> @a=  map { int rand 100 } 1..10 => (22, 15, 27, 44, 70, 85, 
+74, 93, 96, 14)

  DB<115> sub minindex { 
             my $x=\@_; 
             reduce { $x->[$a] < $x->[$b] ? $a : $b } 0 .. $#_ 
          }

  DB<116> print minindex @a
9

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        Cheers Rolf

        ( addicted to the Perl Programming Language)

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