nick-chandoke

examples of refactoring in k/apl & factor

consider the following factor definition:

:: julian-day-number ( $year $month $day -- n )
    14 $month - 12 /i :> $a $year 4800 + $a -
    :> $y $month 12 $a * + 3 - :> $m $day 153 $m * 2 + 5 /i +
    365 $y * + $y 4 /i + $y 100 /i - $y 400 /i + 32045 - ;

nick-chandoke

factoring and symbolic algebra

factor gets its name from the fact that factor code is easy to factor. factoring is, like in elementary algebra, a compression scheme whereby common information is separated. consider the following:

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