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Re^6: A short whishlist of Perl5 improvements leaping to Perl7

by tybalt89 (Monsignor)
on Nov 25, 2020 at 05:09 UTC ( [id://11124184]=note: print w/replies, xml ) Need Help??

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  1. or download this
    {
      my %rtoa = ( M=>1000, D=>500, C=>100, L=>50, X=>10, V=>5, I=>1 );
    ...
        reduce { $a+$b-$a%$b*2 } @rtoa{split//, uc(shift)}
      }
    }
    
  2. or download this
    sub roman_to_dec { reduce { $a+$b-$a%$b*2 }
      @{{split/(\d+)/, 'M1000D500C100L50X10V5I1'}}{split//, uc pop}
    }
    
  3. or download this
    sub roman_to_dec { reduce { $a+$b-$a%$b*2 }
      map 'M1000D500C100L50X10V5I1' =~ /$_(\d+)/i, split//, pop
    }
    

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