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Re^3: adding items, but with interim results

by LanX (Canon)
on Oct 17, 2013 at 23:30 UTC ( #1058683=note: print w/ replies, xml ) Need Help??

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  1. or download this
      DB<168> sub tst (&@) { my $cr=shift; print $cr->($_)," " for @_ }
    
      DB<169> use feature 'state'; tst {state $i++} 1..3 for 1..3
     => ""
    0 1 2 0 1 2 0 1 2 
    
  2. or download this
      DB<173> use feature 'state'; map {state $i++; print "$i "} 1..3 for 
    +1..3
     => ""
    1 2 3 4 5 6 7 8 9 
    
  3. or download this
      DB<195> use feature 'state'; for (1..3) { $y=0;while (++(my $x)) { p
    +rint " $x .";last if $y++>3 } }
     => ""
    ...
      DB<196> use feature 'state'; for (1..3) { $y=0;while (++(state $x)) 
    +{ print " $x .";last if $y++>3 } }
     => ""
     1 . 2 . 3 . 4 . 5 . 6 . 7 . 8 . 9 . 10 . 11 . 12 . 13 . 14 . 15 .
    

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